20123025

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{20639}}^1$

素因数の和:20665

約数の個数: 24

約数和(自身を含む): 35831040

約数和(自身を除く): 15708015

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 325, 975, 20639, 61917, 103195, 268307, 309585, 515975, 804921, 1341535, 1547925, 4024605, 6707675, 20123025]

約数ペア:

[(1, 20123025), (3, 6707675), (5, 4024605), (13, 1547925), (15, 1341535), (25, 804921), (39, 515975), (65, 309585), (75, 268307), (195, 103195), (325, 61917), (975, 20639)]