21820498

素因数分解:

$2^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{11213}}^1$

素因数の和:11361

約数の個数: 16

約数和(自身を含む): 37679040

約数和(自身を除く): 15858542

約数列:

[1, 2, 7, 14, 139, 278, 973, 1946, 11213, 22426, 78491, 156982, 1558607, 3117214, 10910249, 21820498]

約数ペア:

[(1, 21820498), (2, 10910249), (7, 3117214), (14, 1558607), (139, 156982), (278, 78491), (973, 22426), (1946, 11213)]