21581238

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{513839}}^1$

素因数の和:513851

約数の個数: 16

約数和(自身を含む): 49328640

約数和(自身を除く): 27747402

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 513839, 1027678, 1541517, 3083034, 3596873, 7193746, 10790619, 21581238]

約数ペア:

[(1, 21581238), (2, 10790619), (3, 7193746), (6, 3596873), (7, 3083034), (14, 1541517), (21, 1027678), (42, 513839)]