81852040

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{19867}}^1$

素因数の和:19981

約数の個数: 32

約数和(自身を含む): 185964480

約数和(自身を除く): 104112440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 19867, 39734, 79468, 99335, 158936, 198670, 397340, 794680, 2046301, 4092602, 8185204, 10231505, 16370408, 20463010, 40926020, 81852040]

約数ペア:

[(1, 81852040), (2, 40926020), (4, 20463010), (5, 16370408), (8, 10231505), (10, 8185204), (20, 4092602), (40, 2046301), (103, 794680), (206, 397340), (412, 198670), (515, 158936), (824, 99335), (1030, 79468), (2060, 39734), (4120, 19867)]