20177275

素因数分解:

$5^2\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{131}}^1$

素因数の和:303

約数の個数: 24

約数和(自身を含む): 25877808

約数和(自身を除く): 5700533

約数列:

[1, 5, 25, 61, 101, 131, 305, 505, 655, 1525, 2525, 3275, 6161, 7991, 13231, 30805, 39955, 66155, 154025, 199775, 330775, 807091, 4035455, 20177275]

約数ペア:

[(1, 20177275), (5, 4035455), (25, 807091), (61, 330775), (101, 199775), (131, 154025), (305, 66155), (505, 39955), (655, 30805), (1525, 13231), (2525, 7991), (3275, 6161)]