31130920

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{571}}^1$

素因数の和:658

約数の個数: 64

約数和(自身を含む): 74131200

約数和(自身を除く): 43000280

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 47, 58, 94, 116, 145, 188, 232, 235, 290, 376, 470, 571, 580, 940, 1142, 1160, 1363, 1880, 2284, 2726, 2855, 4568, 5452, 5710, 6815, 10904, 11420, 13630, 16559, 22840, 26837, 27260, 33118, 53674, 54520, 66236, 82795, 107348, 132472, 134185, 165590, 214696, 268370, 331180, 536740, 662360, 778273, 1073480, 1556546, 3113092, 3891365, 6226184, 7782730, 15565460, 31130920]

約数ペア:

[(1, 31130920), (2, 15565460), (4, 7782730), (5, 6226184), (8, 3891365), (10, 3113092), (20, 1556546), (29, 1073480), (40, 778273), (47, 662360), (58, 536740), (94, 331180), (116, 268370), (145, 214696), (188, 165590), (232, 134185), (235, 132472), (290, 107348), (376, 82795), (470, 66236), (571, 54520), (580, 53674), (940, 33118), (1142, 27260), (1160, 26837), (1363, 22840), (1880, 16559), (2284, 13630), (2726, 11420), (2855, 10904), (4568, 6815), (5452, 5710)]