20687514625

素因数分解:

$5^3\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{145303}}^1$

素因数の和:145402

約数の個数: 32

約数和(自身を含む): 27744926976

約数和(自身を除く): 7057412351

約数列:

[1, 5, 17, 25, 67, 85, 125, 335, 425, 1139, 1675, 2125, 5695, 8375, 28475, 142375, 145303, 726515, 2470151, 3632575, 9735301, 12350755, 18162875, 48676505, 61753775, 165500117, 243382525, 308768875, 827500585, 1216912625, 4137502925, 20687514625]

約数ペア:

[(1, 20687514625), (5, 4137502925), (17, 1216912625), (25, 827500585), (67, 308768875), (85, 243382525), (125, 165500117), (335, 61753775), (425, 48676505), (1139, 18162875), (1675, 12350755), (2125, 9735301), (5695, 3632575), (8375, 2470151), (28475, 726515), (142375, 145303)]