21102185

素因数分解:

$5^1\times {\mathrm{13}}^3\times {\mathrm{17}}^1\times {\mathrm{113}}^1$

素因数の和:174

約数の個数: 32

約数和(自身を含む): 29302560

約数和(自身を除く): 8200375

約数列:

[1, 5, 13, 17, 65, 85, 113, 169, 221, 565, 845, 1105, 1469, 1921, 2197, 2873, 7345, 9605, 10985, 14365, 19097, 24973, 37349, 95485, 124865, 186745, 248261, 324649, 1241305, 1623245, 4220437, 21102185]

約数ペア:

[(1, 21102185), (5, 4220437), (13, 1623245), (17, 1241305), (65, 324649), (85, 248261), (113, 186745), (169, 124865), (221, 95485), (565, 37349), (845, 24973), (1105, 19097), (1469, 14365), (1921, 10985), (2197, 9605), (2873, 7345)]