21398862

素因数分解:

$2^1\times 3^1\times {\mathrm{67}}^1\times {\mathrm{53231}}^1$

素因数の和:53303

約数の個数: 16

約数和(自身を含む): 43437312

約数和(自身を除く): 22038450

約数列:

[1, 2, 3, 6, 67, 134, 201, 402, 53231, 106462, 159693, 319386, 3566477, 7132954, 10699431, 21398862]

約数ペア:

[(1, 21398862), (2, 10699431), (3, 7132954), (6, 3566477), (67, 319386), (134, 159693), (201, 106462), (402, 53231)]