21433940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{521}}^1$

素因数の和:569

約数の個数: 72

約数和(自身を含む): 52486056

約数和(自身を除く): 31052116

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 121, 170, 187, 220, 242, 340, 374, 484, 521, 605, 748, 935, 1042, 1210, 1870, 2057, 2084, 2420, 2605, 3740, 4114, 5210, 5731, 8228, 8857, 10285, 10420, 11462, 17714, 20570, 22924, 28655, 35428, 41140, 44285, 57310, 63041, 88570, 97427, 114620, 126082, 177140, 194854, 252164, 315205, 389708, 487135, 630410, 974270, 1071697, 1260820, 1948540, 2143394, 4286788, 5358485, 10716970, 21433940]

約数ペア:

[(1, 21433940), (2, 10716970), (4, 5358485), (5, 4286788), (10, 2143394), (11, 1948540), (17, 1260820), (20, 1071697), (22, 974270), (34, 630410), (44, 487135), (55, 389708), (68, 315205), (85, 252164), (110, 194854), (121, 177140), (170, 126082), (187, 114620), (220, 97427), (242, 88570), (340, 63041), (374, 57310), (484, 44285), (521, 41140), (605, 35428), (748, 28655), (935, 22924), (1042, 20570), (1210, 17714), (1870, 11462), (2057, 10420), (2084, 10285), (2420, 8857), (2605, 8228), (3740, 5731), (4114, 5210)]