18671940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{73}}^1$

素因数の和:131

約数の個数: 216

約数和(自身を含む): 69090840

約数和(自身を除く): 50418900

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 29, 30, 35, 36, 42, 45, 49, 58, 60, 63, 70, 73, 84, 87, 90, 98, 105, 116, 126, 140, 145, 146, 147, 174, 180, 196, 203, 210, 219, 245, 252, 261, 290, 292, 294, 315, 348, 365, 406, 420, 435, 438, 441, 490, 511, 522, 580, 588, 609, 630, 657, 730, 735, 812, 870, 876, 882, 980, 1015, 1022, 1044, 1095, 1218, 1260, 1305, 1314, 1421, 1460, 1470, 1533, 1740, 1764, 1827, 2030, 2044, 2117, 2190, 2205, 2436, 2555, 2610, 2628, 2842, 2940, 3045, 3066, 3285, 3577, 3654, 4060, 4234, 4263, 4380, 4410, 4599, 5110, 5220, 5684, 6090, 6132, 6351, 6570, 7105, 7154, 7308, 7665, 8468, 8526, 8820, 9135, 9198, 10220, 10585, 10731, 12180, 12702, 12789, 13140, 14210, 14308, 14819, 15330, 17052, 17885, 18270, 18396, 19053, 21170, 21315, 21462, 22995, 25404, 25578, 28420, 29638, 30660, 31755, 32193, 35770, 36540, 38106, 42340, 42630, 42924, 44457, 45990, 51156, 53655, 59276, 63510, 63945, 64386, 71540, 74095, 76212, 85260, 88914, 91980, 95265, 103733, 107310, 127020, 127890, 128772, 133371, 148190, 160965, 177828, 190530, 207466, 214620, 222285, 255780, 266742, 296380, 311199, 321930, 381060, 414932, 444570, 518665, 533484, 622398, 643860, 666855, 889140, 933597, 1037330, 1244796, 1333710, 1555995, 1867194, 2074660, 2667420, 3111990, 3734388, 4667985, 6223980, 9335970, 18671940]

約数ペア:

[(1, 18671940), (2, 9335970), (3, 6223980), (4, 4667985), (5, 3734388), (6, 3111990), (7, 2667420), (9, 2074660), (10, 1867194), (12, 1555995), (14, 1333710), (15, 1244796), (18, 1037330), (20, 933597), (21, 889140), (28, 666855), (29, 643860), (30, 622398), (35, 533484), (36, 518665), (42, 444570), (45, 414932), (49, 381060), (58, 321930), (60, 311199), (63, 296380), (70, 266742), (73, 255780), (84, 222285), (87, 214620), (90, 207466), (98, 190530), (105, 177828), (116, 160965), (126, 148190), (140, 133371), (145, 128772), (146, 127890), (147, 127020), (174, 107310), (180, 103733), (196, 95265), (203, 91980), (210, 88914), (219, 85260), (245, 76212), (252, 74095), (261, 71540), (290, 64386), (292, 63945), (294, 63510), (315, 59276), (348, 53655), (365, 51156), (406, 45990), (420, 44457), (435, 42924), (438, 42630), (441, 42340), (490, 38106), (511, 36540), (522, 35770), (580, 32193), (588, 31755), (609, 30660), (630, 29638), (657, 28420), (730, 25578), (735, 25404), (812, 22995), (870, 21462), (876, 21315), (882, 21170), (980, 19053), (1015, 18396), (1022, 18270), (1044, 17885), (1095, 17052), (1218, 15330), (1260, 14819), (1305, 14308), (1314, 14210), (1421, 13140), (1460, 12789), (1470, 12702), (1533, 12180), (1740, 10731), (1764, 10585), (1827, 10220), (2030, 9198), (2044, 9135), (2117, 8820), (2190, 8526), (2205, 8468), (2436, 7665), (2555, 7308), (2610, 7154), (2628, 7105), (2842, 6570), (2940, 6351), (3045, 6132), (3066, 6090), (3285, 5684), (3577, 5220), (3654, 5110), (4060, 4599), (4234, 4410), (4263, 4380)]