399350225

素因数分解:

$5^2\times {\mathrm{61}}^1\times {\mathrm{131}}^1\times {\mathrm{1999}}^1$

素因数の和:2201

約数の個数: 24

約数和(自身を含む): 507408000

約数和(自身を除く): 108057775

約数列:

[1, 5, 25, 61, 131, 305, 655, 1525, 1999, 3275, 7991, 9995, 39955, 49975, 121939, 199775, 261869, 609695, 1309345, 3048475, 6546725, 15974009, 79870045, 399350225]

約数ペア:

[(1, 399350225), (5, 79870045), (25, 15974009), (61, 6546725), (131, 3048475), (305, 1309345), (655, 609695), (1525, 261869), (1999, 199775), (3275, 121939), (7991, 49975), (9995, 39955)]