218915810

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{509}}^1\times {\mathrm{1049}}^1$

素因数の和:1606

約数の個数: 32

約数和(自身を含む): 404838000

約数和(自身を除く): 185922190

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 509, 1018, 1049, 2098, 2545, 5090, 5245, 10490, 20869, 41738, 43009, 86018, 104345, 208690, 215045, 430090, 533941, 1067882, 2669705, 5339410, 21891581, 43783162, 109457905, 218915810]

約数ペア:

[(1, 218915810), (2, 109457905), (5, 43783162), (10, 21891581), (41, 5339410), (82, 2669705), (205, 1067882), (410, 533941), (509, 430090), (1018, 215045), (1049, 208690), (2098, 104345), (2545, 86018), (5090, 43009), (5245, 41738), (10490, 20869)]