19959660

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:133

約数の個数: 216

約数和(自身を含む): 73696896

約数和(自身を除く): 53737236

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 31, 35, 36, 42, 45, 49, 60, 62, 63, 70, 73, 84, 90, 93, 98, 105, 124, 126, 140, 146, 147, 155, 180, 186, 196, 210, 217, 219, 245, 252, 279, 292, 294, 310, 315, 365, 372, 420, 434, 438, 441, 465, 490, 511, 558, 588, 620, 630, 651, 657, 730, 735, 868, 876, 882, 930, 980, 1022, 1085, 1095, 1116, 1260, 1302, 1314, 1395, 1460, 1470, 1519, 1533, 1764, 1860, 1953, 2044, 2170, 2190, 2205, 2263, 2555, 2604, 2628, 2790, 2940, 3038, 3066, 3255, 3285, 3577, 3906, 4340, 4380, 4410, 4526, 4557, 4599, 5110, 5580, 6076, 6132, 6510, 6570, 6789, 7154, 7595, 7665, 7812, 8820, 9052, 9114, 9198, 9765, 10220, 10731, 11315, 13020, 13140, 13578, 13671, 14308, 15190, 15330, 15841, 17885, 18228, 18396, 19530, 20367, 21462, 22630, 22785, 22995, 27156, 27342, 30380, 30660, 31682, 32193, 33945, 35770, 39060, 40734, 42924, 45260, 45570, 45990, 47523, 53655, 54684, 63364, 64386, 67890, 68355, 71540, 79205, 81468, 91140, 91980, 95046, 101835, 107310, 110887, 128772, 135780, 136710, 142569, 158410, 160965, 190092, 203670, 214620, 221774, 237615, 273420, 285138, 316820, 321930, 332661, 407340, 443548, 475230, 554435, 570276, 643860, 665322, 712845, 950460, 997983, 1108870, 1330644, 1425690, 1663305, 1995966, 2217740, 2851380, 3326610, 3991932, 4989915, 6653220, 9979830, 19959660]

約数ペア:

[(1, 19959660), (2, 9979830), (3, 6653220), (4, 4989915), (5, 3991932), (6, 3326610), (7, 2851380), (9, 2217740), (10, 1995966), (12, 1663305), (14, 1425690), (15, 1330644), (18, 1108870), (20, 997983), (21, 950460), (28, 712845), (30, 665322), (31, 643860), (35, 570276), (36, 554435), (42, 475230), (45, 443548), (49, 407340), (60, 332661), (62, 321930), (63, 316820), (70, 285138), (73, 273420), (84, 237615), (90, 221774), (93, 214620), (98, 203670), (105, 190092), (124, 160965), (126, 158410), (140, 142569), (146, 136710), (147, 135780), (155, 128772), (180, 110887), (186, 107310), (196, 101835), (210, 95046), (217, 91980), (219, 91140), (245, 81468), (252, 79205), (279, 71540), (292, 68355), (294, 67890), (310, 64386), (315, 63364), (365, 54684), (372, 53655), (420, 47523), (434, 45990), (438, 45570), (441, 45260), (465, 42924), (490, 40734), (511, 39060), (558, 35770), (588, 33945), (620, 32193), (630, 31682), (651, 30660), (657, 30380), (730, 27342), (735, 27156), (868, 22995), (876, 22785), (882, 22630), (930, 21462), (980, 20367), (1022, 19530), (1085, 18396), (1095, 18228), (1116, 17885), (1260, 15841), (1302, 15330), (1314, 15190), (1395, 14308), (1460, 13671), (1470, 13578), (1519, 13140), (1533, 13020), (1764, 11315), (1860, 10731), (1953, 10220), (2044, 9765), (2170, 9198), (2190, 9114), (2205, 9052), (2263, 8820), (2555, 7812), (2604, 7665), (2628, 7595), (2790, 7154), (2940, 6789), (3038, 6570), (3066, 6510), (3255, 6132), (3285, 6076), (3577, 5580), (3906, 5110), (4340, 4599), (4380, 4557), (4410, 4526)]