18421360

素因数分解:

$2^4\times 5^1\times {\mathrm{409}}^1\times {\mathrm{563}}^1$

素因数の和:985

約数の個数: 40

約数和(自身を含む): 43010640

約数和(自身を除く): 24589280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 409, 563, 818, 1126, 1636, 2045, 2252, 2815, 3272, 4090, 4504, 5630, 6544, 8180, 9008, 11260, 16360, 22520, 32720, 45040, 230267, 460534, 921068, 1151335, 1842136, 2302670, 3684272, 4605340, 9210680, 18421360]

約数ペア:

[(1, 18421360), (2, 9210680), (4, 4605340), (5, 3684272), (8, 2302670), (10, 1842136), (16, 1151335), (20, 921068), (40, 460534), (80, 230267), (409, 45040), (563, 32720), (818, 22520), (1126, 16360), (1636, 11260), (2045, 9008), (2252, 8180), (2815, 6544), (3272, 5630), (4090, 4504)]