18119840

素因数分解:

$2^5\times 5^1\times {\mathrm{269}}^1\times {\mathrm{421}}^1$

素因数の和:705

約数の個数: 48

約数和(自身を含む): 43069320

約数和(自身を除く): 24949480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 269, 421, 538, 842, 1076, 1345, 1684, 2105, 2152, 2690, 3368, 4210, 4304, 5380, 6736, 8420, 8608, 10760, 13472, 16840, 21520, 33680, 43040, 67360, 113249, 226498, 452996, 566245, 905992, 1132490, 1811984, 2264980, 3623968, 4529960, 9059920, 18119840]

約数ペア:

[(1, 18119840), (2, 9059920), (4, 4529960), (5, 3623968), (8, 2264980), (10, 1811984), (16, 1132490), (20, 905992), (32, 566245), (40, 452996), (80, 226498), (160, 113249), (269, 67360), (421, 43040), (538, 33680), (842, 21520), (1076, 16840), (1345, 13472), (1684, 10760), (2105, 8608), (2152, 8420), (2690, 6736), (3368, 5380), (4210, 4304)]