21335839

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1\times {\mathrm{439}}^1$

素因数の和:630

約数の個数: 16

約数和(自身を含む): 25090560

約数和(自身を除く): 3754721

約数列:

[1, 7, 53, 131, 371, 439, 917, 3073, 6943, 23267, 48601, 57509, 162869, 402563, 3047977, 21335839]

約数ペア:

[(1, 21335839), (7, 3047977), (53, 402563), (131, 162869), (371, 57509), (439, 48601), (917, 23267), (3073, 6943)]