20201025

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{20719}}^1$

素因数の和:20745

約数の個数: 24

約数和(自身を含む): 35969920

約数和(自身を除く): 15768895

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 325, 975, 20719, 62157, 103595, 269347, 310785, 517975, 808041, 1346735, 1553925, 4040205, 6733675, 20201025]

約数ペア:

[(1, 20201025), (3, 6733675), (5, 4040205), (13, 1553925), (15, 1346735), (25, 808041), (39, 517975), (65, 310785), (75, 269347), (195, 103595), (325, 62157), (975, 20719)]