20532490

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{239}}^1$

素因数の和:339

約数の個数: 48

約数和(自身を含む): 41368320

約数和(自身を除く): 20835830

約数列:

[1, 2, 5, 10, 11, 22, 55, 71, 110, 121, 142, 239, 242, 355, 478, 605, 710, 781, 1195, 1210, 1562, 2390, 2629, 3905, 5258, 7810, 8591, 13145, 16969, 17182, 26290, 28919, 33938, 42955, 57838, 84845, 85910, 144595, 169690, 186659, 289190, 373318, 933295, 1866590, 2053249, 4106498, 10266245, 20532490]

約数ペア:

[(1, 20532490), (2, 10266245), (5, 4106498), (10, 2053249), (11, 1866590), (22, 933295), (55, 373318), (71, 289190), (110, 186659), (121, 169690), (142, 144595), (239, 85910), (242, 84845), (355, 57838), (478, 42955), (605, 33938), (710, 28919), (781, 26290), (1195, 17182), (1210, 16969), (1562, 13145), (2390, 8591), (2629, 7810), (3905, 5258)]