221334640

素因数分解:

$2^4\times 5^1\times {\mathrm{103}}^1\times {\mathrm{26861}}^1$

素因数の和:26977

約数の個数: 40

約数和(自身を含む): 519618528

約数和(自身を除く): 298283888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 103, 206, 412, 515, 824, 1030, 1648, 2060, 4120, 8240, 26861, 53722, 107444, 134305, 214888, 268610, 429776, 537220, 1074440, 2148880, 2766683, 5533366, 11066732, 13833415, 22133464, 27666830, 44266928, 55333660, 110667320, 221334640]

約数ペア:

[(1, 221334640), (2, 110667320), (4, 55333660), (5, 44266928), (8, 27666830), (10, 22133464), (16, 13833415), (20, 11066732), (40, 5533366), (80, 2766683), (103, 2148880), (206, 1074440), (412, 537220), (515, 429776), (824, 268610), (1030, 214888), (1648, 134305), (2060, 107444), (4120, 53722), (8240, 26861)]