16980875

素因数分解:

$5^3\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:224

約数の個数: 32

約数和(自身を含む): 22980672

約数和(自身を除く): 5999797

約数列:

[1, 5, 17, 25, 61, 85, 125, 131, 305, 425, 655, 1037, 1525, 2125, 2227, 3275, 5185, 7625, 7991, 11135, 16375, 25925, 39955, 55675, 129625, 135847, 199775, 278375, 679235, 998875, 3396175, 16980875]

約数ペア:

[(1, 16980875), (5, 3396175), (17, 998875), (25, 679235), (61, 278375), (85, 199775), (125, 135847), (131, 129625), (305, 55675), (425, 39955), (655, 25925), (1037, 16375), (1525, 11135), (2125, 7991), (2227, 7625), (3275, 5185)]