21086299213

素因数分解:

$7^3\times {\mathrm{4943}}^1\times {\mathrm{12437}}^1$

素因数の和:17401

約数の個数: 16

約数和(自身を含む): 24597388800

約数和(自身を除く): 3511089587

約数列:

[1, 7, 49, 343, 4943, 12437, 34601, 87059, 242207, 609413, 1695449, 4265891, 61476091, 430332637, 3012328459, 21086299213]

約数ペア:

[(1, 21086299213), (7, 3012328459), (49, 430332637), (343, 61476091), (4943, 4265891), (12437, 1695449), (34601, 609413), (87059, 242207)]