31505360

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{3613}}^1$

素因数の和:3735

約数の個数: 40

約数和(自身を含む): 73942440

約数和(自身を除く): 42437080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 3613, 4360, 7226, 8720, 14452, 18065, 28904, 36130, 57808, 72260, 144520, 289040, 393817, 787634, 1575268, 1969085, 3150536, 3938170, 6301072, 7876340, 15752680, 31505360]

約数ペア:

[(1, 31505360), (2, 15752680), (4, 7876340), (5, 6301072), (8, 3938170), (10, 3150536), (16, 1969085), (20, 1575268), (40, 787634), (80, 393817), (109, 289040), (218, 144520), (436, 72260), (545, 57808), (872, 36130), (1090, 28904), (1744, 18065), (2180, 14452), (3613, 8720), (4360, 7226)]