31499240

素因数分解:

$2^3\times 5^1\times {\mathrm{811}}^1\times {\mathrm{971}}^1$

素因数の和:1793

約数の個数: 32

約数和(自身を含む): 71033760

約数和(自身を除く): 39534520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 811, 971, 1622, 1942, 3244, 3884, 4055, 4855, 6488, 7768, 8110, 9710, 16220, 19420, 32440, 38840, 787481, 1574962, 3149924, 3937405, 6299848, 7874810, 15749620, 31499240]

約数ペア:

[(1, 31499240), (2, 15749620), (4, 7874810), (5, 6299848), (8, 3937405), (10, 3149924), (20, 1574962), (40, 787481), (811, 38840), (971, 32440), (1622, 19420), (1942, 16220), (3244, 9710), (3884, 8110), (4055, 7768), (4855, 6488)]