31451480

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{269}}^1$

素因数の和:396

約数の個数: 64

約数和(自身を含む): 73872000

約数和(自身を除く): 42420520

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 79, 148, 158, 185, 269, 296, 316, 370, 395, 538, 632, 740, 790, 1076, 1345, 1480, 1580, 2152, 2690, 2923, 3160, 5380, 5846, 9953, 10760, 11692, 14615, 19906, 21251, 23384, 29230, 39812, 42502, 49765, 58460, 79624, 85004, 99530, 106255, 116920, 170008, 199060, 212510, 398120, 425020, 786287, 850040, 1572574, 3145148, 3931435, 6290296, 7862870, 15725740, 31451480]

約数ペア:

[(1, 31451480), (2, 15725740), (4, 7862870), (5, 6290296), (8, 3931435), (10, 3145148), (20, 1572574), (37, 850040), (40, 786287), (74, 425020), (79, 398120), (148, 212510), (158, 199060), (185, 170008), (269, 116920), (296, 106255), (316, 99530), (370, 85004), (395, 79624), (538, 58460), (632, 49765), (740, 42502), (790, 39812), (1076, 29230), (1345, 23384), (1480, 21251), (1580, 19906), (2152, 14615), (2690, 11692), (2923, 10760), (3160, 9953), (5380, 5846)]