18004025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1787}}^1$

素因数の和:1841

約数の個数: 24

約数和(自身を含む): 24831744

約数和(自身を除く): 6827719

約数列:

[1, 5, 13, 25, 31, 65, 155, 325, 403, 775, 1787, 2015, 8935, 10075, 23231, 44675, 55397, 116155, 276985, 580775, 720161, 1384925, 3600805, 18004025]

約数ペア:

[(1, 18004025), (5, 3600805), (13, 1384925), (25, 720161), (31, 580775), (65, 276985), (155, 116155), (325, 55397), (403, 44675), (775, 23231), (1787, 10075), (2015, 8935)]