646636250

素因数分解:

$2^1\times 5^4\times {\mathrm{13}}^2\times {\mathrm{3061}}^1$

素因数の和:3109

約数の個数: 60

約数和(自身を含む): 1312890678

約数和(自身を除く): 666254428

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 169, 250, 325, 338, 625, 650, 845, 1250, 1625, 1690, 3061, 3250, 4225, 6122, 8125, 8450, 15305, 16250, 21125, 30610, 39793, 42250, 76525, 79586, 105625, 153050, 198965, 211250, 382625, 397930, 517309, 765250, 994825, 1034618, 1913125, 1989650, 2586545, 3826250, 4974125, 5173090, 9948250, 12932725, 24870625, 25865450, 49741250, 64663625, 129327250, 323318125, 646636250]

約数ペア:

[(1, 646636250), (2, 323318125), (5, 129327250), (10, 64663625), (13, 49741250), (25, 25865450), (26, 24870625), (50, 12932725), (65, 9948250), (125, 5173090), (130, 4974125), (169, 3826250), (250, 2586545), (325, 1989650), (338, 1913125), (625, 1034618), (650, 994825), (845, 765250), (1250, 517309), (1625, 397930), (1690, 382625), (3061, 211250), (3250, 198965), (4225, 153050), (6122, 105625), (8125, 79586), (8450, 76525), (15305, 42250), (16250, 39793), (21125, 30610)]