208308359

素因数分解:

$7^4\times {\mathrm{101}}^1\times {\mathrm{859}}^1$

素因数の和:988

約数の個数: 20

約数和(自身を含む): 245703720

約数和(自身を除く): 37395361

約数列:

[1, 7, 49, 101, 343, 707, 859, 2401, 4949, 6013, 34643, 42091, 86759, 242501, 294637, 607313, 2062459, 4251191, 29758337, 208308359]

約数ペア:

[(1, 208308359), (7, 29758337), (49, 4251191), (101, 2062459), (343, 607313), (707, 294637), (859, 242501), (2401, 86759), (4949, 42091), (6013, 34643)]