28716740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:201

約数の個数: 96

約数和(自身を含む): 70489440

約数和(自身を除く): 41772700

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 73, 85, 89, 130, 146, 170, 178, 221, 260, 292, 340, 356, 365, 442, 445, 730, 884, 890, 949, 1105, 1157, 1241, 1460, 1513, 1780, 1898, 2210, 2314, 2482, 3026, 3796, 4420, 4628, 4745, 4964, 5785, 6052, 6205, 6497, 7565, 9490, 11570, 12410, 12994, 15130, 16133, 18980, 19669, 23140, 24820, 25988, 30260, 32266, 32485, 39338, 64532, 64970, 78676, 80665, 84461, 98345, 110449, 129940, 161330, 168922, 196690, 220898, 322660, 337844, 393380, 422305, 441796, 552245, 844610, 1104490, 1435837, 1689220, 2208980, 2871674, 5743348, 7179185, 14358370, 28716740]

約数ペア:

[(1, 28716740), (2, 14358370), (4, 7179185), (5, 5743348), (10, 2871674), (13, 2208980), (17, 1689220), (20, 1435837), (26, 1104490), (34, 844610), (52, 552245), (65, 441796), (68, 422305), (73, 393380), (85, 337844), (89, 322660), (130, 220898), (146, 196690), (170, 168922), (178, 161330), (221, 129940), (260, 110449), (292, 98345), (340, 84461), (356, 80665), (365, 78676), (442, 64970), (445, 64532), (730, 39338), (884, 32485), (890, 32266), (949, 30260), (1105, 25988), (1157, 24820), (1241, 23140), (1460, 19669), (1513, 18980), (1780, 16133), (1898, 15130), (2210, 12994), (2314, 12410), (2482, 11570), (3026, 9490), (3796, 7565), (4420, 6497), (4628, 6205), (4745, 6052), (4964, 5785)]