18355600

素因数分解:

$2^4\times 5^2\times {\mathrm{109}}^1\times {\mathrm{421}}^1$

素因数の和:548

約数の個数: 60

約数和(自身を含む): 44609620

約数和(自身を除く): 26254020

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 109, 200, 218, 400, 421, 436, 545, 842, 872, 1090, 1684, 1744, 2105, 2180, 2725, 3368, 4210, 4360, 5450, 6736, 8420, 8720, 10525, 10900, 16840, 21050, 21800, 33680, 42100, 43600, 45889, 84200, 91778, 168400, 183556, 229445, 367112, 458890, 734224, 917780, 1147225, 1835560, 2294450, 3671120, 4588900, 9177800, 18355600]

約数ペア:

[(1, 18355600), (2, 9177800), (4, 4588900), (5, 3671120), (8, 2294450), (10, 1835560), (16, 1147225), (20, 917780), (25, 734224), (40, 458890), (50, 367112), (80, 229445), (100, 183556), (109, 168400), (200, 91778), (218, 84200), (400, 45889), (421, 43600), (436, 42100), (545, 33680), (842, 21800), (872, 21050), (1090, 16840), (1684, 10900), (1744, 10525), (2105, 8720), (2180, 8420), (2725, 6736), (3368, 5450), (4210, 4360)]