21290312

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{149}}^1\times {\mathrm{337}}^1$

素因数の和:545

約数の個数: 32

約数和(自身を含む): 41067000

約数和(自身を除く): 19776688

約数列:

[1, 2, 4, 8, 53, 106, 149, 212, 298, 337, 424, 596, 674, 1192, 1348, 2696, 7897, 15794, 17861, 31588, 35722, 50213, 63176, 71444, 100426, 142888, 200852, 401704, 2661289, 5322578, 10645156, 21290312]

約数ペア:

[(1, 21290312), (2, 10645156), (4, 5322578), (8, 2661289), (53, 401704), (106, 200852), (149, 142888), (212, 100426), (298, 71444), (337, 63176), (424, 50213), (596, 35722), (674, 31588), (1192, 17861), (1348, 15794), (2696, 7897)]