199980625

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{163}}^1$

素因数の和:347

約数の個数: 40

約数和(自身を含む): 272562752

約数和(自身を除く): 72582127

約数列:

[1, 5, 13, 25, 65, 125, 151, 163, 325, 625, 755, 815, 1625, 1963, 2119, 3775, 4075, 8125, 9815, 10595, 18875, 20375, 24613, 49075, 52975, 94375, 101875, 123065, 245375, 264875, 319969, 615325, 1226875, 1324375, 1599845, 3076625, 7999225, 15383125, 39996125, 199980625]

約数ペア:

[(1, 199980625), (5, 39996125), (13, 15383125), (25, 7999225), (65, 3076625), (125, 1599845), (151, 1324375), (163, 1226875), (325, 615325), (625, 319969), (755, 264875), (815, 245375), (1625, 123065), (1963, 101875), (2119, 94375), (3775, 52975), (4075, 49075), (8125, 24613), (9815, 20375), (10595, 18875)]