20879575

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{389}}^1$

素因数の和:531

約数の個数: 24

約数和(自身を含む): 27565200

約数和(自身を除く): 6685625

約数列:

[1, 5, 19, 25, 95, 113, 389, 475, 565, 1945, 2147, 2825, 7391, 9725, 10735, 36955, 43957, 53675, 184775, 219785, 835183, 1098925, 4175915, 20879575]

約数ペア:

[(1, 20879575), (5, 4175915), (19, 1098925), (25, 835183), (95, 219785), (113, 184775), (389, 53675), (475, 43957), (565, 36955), (1945, 10735), (2147, 9725), (2825, 7391)]