21247380

素因数分解:

$2^2\times 3^3\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1$

素因数の和:116

約数の個数: 288

約数和(自身を含む): 85034880

約数和(自身を除く): 63787500

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 27, 28, 30, 33, 35, 36, 42, 44, 45, 49, 54, 55, 60, 63, 66, 70, 73, 77, 84, 90, 98, 99, 105, 108, 110, 126, 132, 135, 140, 146, 147, 154, 165, 180, 189, 196, 198, 210, 219, 220, 231, 245, 252, 270, 292, 294, 297, 308, 315, 330, 365, 378, 385, 396, 420, 438, 441, 462, 490, 495, 511, 539, 540, 588, 594, 630, 657, 660, 693, 730, 735, 756, 770, 803, 876, 882, 924, 945, 980, 990, 1022, 1078, 1095, 1155, 1188, 1260, 1314, 1323, 1386, 1460, 1470, 1485, 1533, 1540, 1606, 1617, 1764, 1890, 1971, 1980, 2044, 2079, 2156, 2190, 2205, 2310, 2409, 2555, 2628, 2646, 2695, 2772, 2940, 2970, 3066, 3212, 3234, 3285, 3465, 3577, 3780, 3942, 4015, 4158, 4380, 4410, 4599, 4620, 4818, 4851, 5110, 5292, 5390, 5621, 5940, 6132, 6468, 6570, 6615, 6930, 7154, 7227, 7665, 7884, 8030, 8085, 8316, 8820, 9198, 9636, 9702, 9855, 10220, 10395, 10731, 10780, 11242, 12045, 13140, 13230, 13797, 13860, 14308, 14454, 14553, 15330, 16060, 16170, 16863, 17885, 18396, 19404, 19710, 20790, 21462, 21681, 22484, 22995, 24090, 24255, 26460, 27594, 28105, 28908, 29106, 30660, 32193, 32340, 33726, 35770, 36135, 39347, 39420, 41580, 42924, 43362, 45990, 48180, 48510, 50589, 53655, 55188, 56210, 58212, 64386, 67452, 68985, 71540, 72270, 72765, 78694, 84315, 86724, 91980, 96579, 97020, 101178, 107310, 108405, 112420, 118041, 128772, 137970, 144540, 145530, 151767, 157388, 160965, 168630, 193158, 196735, 202356, 214620, 216810, 236082, 252945, 275940, 291060, 303534, 321930, 337260, 354123, 386316, 393470, 433620, 472164, 482895, 505890, 590205, 607068, 643860, 708246, 758835, 786940, 965790, 1011780, 1062369, 1180410, 1416492, 1517670, 1770615, 1931580, 2124738, 2360820, 3035340, 3541230, 4249476, 5311845, 7082460, 10623690, 21247380]

約数ペア:

[(1, 21247380), (2, 10623690), (3, 7082460), (4, 5311845), (5, 4249476), (6, 3541230), (7, 3035340), (9, 2360820), (10, 2124738), (11, 1931580), (12, 1770615), (14, 1517670), (15, 1416492), (18, 1180410), (20, 1062369), (21, 1011780), (22, 965790), (27, 786940), (28, 758835), (30, 708246), (33, 643860), (35, 607068), (36, 590205), (42, 505890), (44, 482895), (45, 472164), (49, 433620), (54, 393470), (55, 386316), (60, 354123), (63, 337260), (66, 321930), (70, 303534), (73, 291060), (77, 275940), (84, 252945), (90, 236082), (98, 216810), (99, 214620), (105, 202356), (108, 196735), (110, 193158), (126, 168630), (132, 160965), (135, 157388), (140, 151767), (146, 145530), (147, 144540), (154, 137970), (165, 128772), (180, 118041), (189, 112420), (196, 108405), (198, 107310), (210, 101178), (219, 97020), (220, 96579), (231, 91980), (245, 86724), (252, 84315), (270, 78694), (292, 72765), (294, 72270), (297, 71540), (308, 68985), (315, 67452), (330, 64386), (365, 58212), (378, 56210), (385, 55188), (396, 53655), (420, 50589), (438, 48510), (441, 48180), (462, 45990), (490, 43362), (495, 42924), (511, 41580), (539, 39420), (540, 39347), (588, 36135), (594, 35770), (630, 33726), (657, 32340), (660, 32193), (693, 30660), (730, 29106), (735, 28908), (756, 28105), (770, 27594), (803, 26460), (876, 24255), (882, 24090), (924, 22995), (945, 22484), (980, 21681), (990, 21462), (1022, 20790), (1078, 19710), (1095, 19404), (1155, 18396), (1188, 17885), (1260, 16863), (1314, 16170), (1323, 16060), (1386, 15330), (1460, 14553), (1470, 14454), (1485, 14308), (1533, 13860), (1540, 13797), (1606, 13230), (1617, 13140), (1764, 12045), (1890, 11242), (1971, 10780), (1980, 10731), (2044, 10395), (2079, 10220), (2156, 9855), (2190, 9702), (2205, 9636), (2310, 9198), (2409, 8820), (2555, 8316), (2628, 8085), (2646, 8030), (2695, 7884), (2772, 7665), (2940, 7227), (2970, 7154), (3066, 6930), (3212, 6615), (3234, 6570), (3285, 6468), (3465, 6132), (3577, 5940), (3780, 5621), (3942, 5390), (4015, 5292), (4158, 5110), (4380, 4851), (4410, 4818), (4599, 4620)]