781203213

素因数分解:

$3^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{89209}}^1$

素因数の和:89361

約数の個数: 24

約数和(自身を含む): 1298897600

約数和(自身を除く): 517694387

約数列:

[1, 3, 7, 9, 21, 63, 139, 417, 973, 1251, 2919, 8757, 89209, 267627, 624463, 802881, 1873389, 5620167, 12400051, 37200153, 86800357, 111600459, 260401071, 781203213]

約数ペア:

[(1, 781203213), (3, 260401071), (7, 111600459), (9, 86800357), (21, 37200153), (63, 12400051), (139, 5620167), (417, 1873389), (973, 802881), (1251, 624463), (2919, 267627), (8757, 89209)]