12420876820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{219683}}^1$

素因数の和:219960

約数の個数: 48

約数和(自身を含む): 28565949888

約数和(自身を除く): 16145073068

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 257, 514, 1028, 1285, 2570, 2827, 5140, 5654, 11308, 14135, 28270, 56540, 219683, 439366, 878732, 1098415, 2196830, 2416513, 4393660, 4833026, 9666052, 12082565, 24165130, 48330260, 56458531, 112917062, 225834124, 282292655, 564585310, 621043841, 1129170620, 1242087682, 2484175364, 3105219205, 6210438410, 12420876820]

約数ペア:

[(1, 12420876820), (2, 6210438410), (4, 3105219205), (5, 2484175364), (10, 1242087682), (11, 1129170620), (20, 621043841), (22, 564585310), (44, 282292655), (55, 225834124), (110, 112917062), (220, 56458531), (257, 48330260), (514, 24165130), (1028, 12082565), (1285, 9666052), (2570, 4833026), (2827, 4393660), (5140, 2416513), (5654, 2196830), (11308, 1098415), (14135, 878732), (28270, 439366), (56540, 219683)]