18693025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{509}}^1$

素因数の和:645

約数の個数: 24

約数和(自身を含む): 25232760

約数和(自身を除く): 6539735

約数列:

[1, 5, 13, 25, 65, 113, 325, 509, 565, 1469, 2545, 2825, 6617, 7345, 12725, 33085, 36725, 57517, 165425, 287585, 747721, 1437925, 3738605, 18693025]

約数ペア:

[(1, 18693025), (5, 3738605), (13, 1437925), (25, 747721), (65, 287585), (113, 165425), (325, 57517), (509, 36725), (565, 33085), (1469, 12725), (2545, 7345), (2825, 6617)]