1680172

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{409}}^1$

素因数の和:505

約数の個数: 24

約数和(自身を含む): 3214400

約数和(自身を除く): 1534228

約数列:

[1, 2, 4, 13, 26, 52, 79, 158, 316, 409, 818, 1027, 1636, 2054, 4108, 5317, 10634, 21268, 32311, 64622, 129244, 420043, 840086, 1680172]

約数ペア:

[(1, 1680172), (2, 840086), (4, 420043), (13, 129244), (26, 64622), (52, 32311), (79, 21268), (158, 10634), (316, 5317), (409, 4108), (818, 2054), (1027, 1636)]