21172019900

素因数分解:

$2^2\times 5^2\times {\mathrm{211720199}}^1$

素因数の和:211720213

約数の個数: 18

約数和(自身を含む): 45943283400

約数和(自身を除く): 24771263500

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 211720199, 423440398, 846880796, 1058600995, 2117201990, 4234403980, 5293004975, 10586009950, 21172019900]

約数ペア:

[(1, 21172019900), (2, 10586009950), (4, 5293004975), (5, 4234403980), (10, 2117201990), (20, 1058600995), (25, 846880796), (50, 423440398), (100, 211720199)]