20173120

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^2\times {\mathrm{521}}^1$

素因数の和:560

約数の個数: 84

約数和(自身を含む): 52902612

約数和(自身を除く): 32729492

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 121, 160, 176, 220, 242, 320, 352, 440, 484, 521, 605, 704, 880, 968, 1042, 1210, 1760, 1936, 2084, 2420, 2605, 3520, 3872, 4168, 4840, 5210, 5731, 7744, 8336, 9680, 10420, 11462, 16672, 19360, 20840, 22924, 28655, 33344, 38720, 41680, 45848, 57310, 63041, 83360, 91696, 114620, 126082, 166720, 183392, 229240, 252164, 315205, 366784, 458480, 504328, 630410, 916960, 1008656, 1260820, 1833920, 2017312, 2521640, 4034624, 5043280, 10086560, 20173120]

約数ペア:

[(1, 20173120), (2, 10086560), (4, 5043280), (5, 4034624), (8, 2521640), (10, 2017312), (11, 1833920), (16, 1260820), (20, 1008656), (22, 916960), (32, 630410), (40, 504328), (44, 458480), (55, 366784), (64, 315205), (80, 252164), (88, 229240), (110, 183392), (121, 166720), (160, 126082), (176, 114620), (220, 91696), (242, 83360), (320, 63041), (352, 57310), (440, 45848), (484, 41680), (521, 38720), (605, 33344), (704, 28655), (880, 22924), (968, 20840), (1042, 19360), (1210, 16672), (1760, 11462), (1936, 10420), (2084, 9680), (2420, 8336), (2605, 7744), (3520, 5731), (3872, 5210), (4168, 4840)]