21858040

素因数分解:

$2^3\times 5^1\times {\mathrm{191}}^1\times {\mathrm{2861}}^1$

素因数の和:3063

約数の個数: 32

約数和(自身を含む): 49455360

約数和(自身を除く): 27597320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 191, 382, 764, 955, 1528, 1910, 2861, 3820, 5722, 7640, 11444, 14305, 22888, 28610, 57220, 114440, 546451, 1092902, 2185804, 2732255, 4371608, 5464510, 10929020, 21858040]

約数ペア:

[(1, 21858040), (2, 10929020), (4, 5464510), (5, 4371608), (8, 2732255), (10, 2185804), (20, 1092902), (40, 546451), (191, 114440), (382, 57220), (764, 28610), (955, 22888), (1528, 14305), (1910, 11444), (2861, 7640), (3820, 5722)]