20907675

素因数分解:

$3^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{2161}}^1$

素因数の和:2220

約数の個数: 36

約数和(自身を含む): 38336584

約数和(自身を除く): 17428909

約数列:

[1, 3, 5, 9, 15, 25, 43, 45, 75, 129, 215, 225, 387, 645, 1075, 1935, 2161, 3225, 6483, 9675, 10805, 19449, 32415, 54025, 92923, 97245, 162075, 278769, 464615, 486225, 836307, 1393845, 2323075, 4181535, 6969225, 20907675]

約数ペア:

[(1, 20907675), (3, 6969225), (5, 4181535), (9, 2323075), (15, 1393845), (25, 836307), (43, 486225), (45, 464615), (75, 278769), (129, 162075), (215, 97245), (225, 92923), (387, 54025), (645, 32415), (1075, 19449), (1935, 10805), (2161, 9675), (3225, 6483)]