19421680

素因数分解:

$2^4\times 5^1\times {\mathrm{103}}^1\times {\mathrm{2357}}^1$

素因数の和:2473

約数の個数: 40

約数和(自身を含む): 45613152

約数和(自身を除く): 26191472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 103, 206, 412, 515, 824, 1030, 1648, 2060, 2357, 4120, 4714, 8240, 9428, 11785, 18856, 23570, 37712, 47140, 94280, 188560, 242771, 485542, 971084, 1213855, 1942168, 2427710, 3884336, 4855420, 9710840, 19421680]

約数ペア:

[(1, 19421680), (2, 9710840), (4, 4855420), (5, 3884336), (8, 2427710), (10, 1942168), (16, 1213855), (20, 971084), (40, 485542), (80, 242771), (103, 188560), (206, 94280), (412, 47140), (515, 37712), (824, 23570), (1030, 18856), (1648, 11785), (2060, 9428), (2357, 8240), (4120, 4714)]