1639251

素因数分解:

$3^3\times {\mathrm{109}}^1\times {\mathrm{557}}^1$

素因数の和:675

約数の個数: 16

約数和(自身を含む): 2455200

約数和(自身を除く): 815949

約数列:

[1, 3, 9, 27, 109, 327, 557, 981, 1671, 2943, 5013, 15039, 60713, 182139, 546417, 1639251]

約数ペア:

[(1, 1639251), (3, 546417), (9, 182139), (27, 60713), (109, 15039), (327, 5013), (557, 2943), (981, 1671)]