21107864

素因数分解:

$2^3\times {\mathrm{137}}^1\times {\mathrm{19259}}^1$

素因数の和:19402

約数の個数: 16

約数和(自身を含む): 39868200

約数和(自身を除く): 18760336

約数列:

[1, 2, 4, 8, 137, 274, 548, 1096, 19259, 38518, 77036, 154072, 2638483, 5276966, 10553932, 21107864]

約数ペア:

[(1, 21107864), (2, 10553932), (4, 5276966), (8, 2638483), (137, 154072), (274, 77036), (548, 38518), (1096, 19259)]