30311320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{821}}^1$

素因数の和:916

約数の個数: 64

約数和(自身を含む): 74571840

約数和(自身を除く): 44260520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 71, 104, 130, 142, 260, 284, 355, 520, 568, 710, 821, 923, 1420, 1642, 1846, 2840, 3284, 3692, 4105, 4615, 6568, 7384, 8210, 9230, 10673, 16420, 18460, 21346, 32840, 36920, 42692, 53365, 58291, 85384, 106730, 116582, 213460, 233164, 291455, 426920, 466328, 582910, 757783, 1165820, 1515566, 2331640, 3031132, 3788915, 6062264, 7577830, 15155660, 30311320]

約数ペア:

[(1, 30311320), (2, 15155660), (4, 7577830), (5, 6062264), (8, 3788915), (10, 3031132), (13, 2331640), (20, 1515566), (26, 1165820), (40, 757783), (52, 582910), (65, 466328), (71, 426920), (104, 291455), (130, 233164), (142, 213460), (260, 116582), (284, 106730), (355, 85384), (520, 58291), (568, 53365), (710, 42692), (821, 36920), (923, 32840), (1420, 21346), (1642, 18460), (1846, 16420), (2840, 10673), (3284, 9230), (3692, 8210), (4105, 7384), (4615, 6568)]