20768785

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{3331}}^1$

素因数の和:3408

約数の個数: 16

約数和(自身を含む): 26389440

約数和(自身を除く): 5620655

約数列:

[1, 5, 29, 43, 145, 215, 1247, 3331, 6235, 16655, 96599, 143233, 482995, 716165, 4153757, 20768785]

約数ペア:

[(1, 20768785), (5, 4153757), (29, 716165), (43, 482995), (145, 143233), (215, 96599), (1247, 16655), (3331, 6235)]