20200375

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{401}}^1$

素因数の和:460

約数の個数: 32

約数和(自身を含む): 28094976

約数和(自身を除く): 7894601

約数列:

[1, 5, 13, 25, 31, 65, 125, 155, 325, 401, 403, 775, 1625, 2005, 2015, 3875, 5213, 10025, 10075, 12431, 26065, 50125, 50375, 62155, 130325, 161603, 310775, 651625, 808015, 1553875, 4040075, 20200375]

約数ペア:

[(1, 20200375), (5, 4040075), (13, 1553875), (25, 808015), (31, 651625), (65, 310775), (125, 161603), (155, 130325), (325, 62155), (401, 50375), (403, 50125), (775, 26065), (1625, 12431), (2005, 10075), (2015, 10025), (3875, 5213)]