20781985

素因数分解:

$5^1\times 7^1\times {\mathrm{631}}^1\times {\mathrm{941}}^1$

素因数の和:1584

約数の個数: 16

約数和(自身を含む): 28576512

約数和(自身を除く): 7794527

約数列:

[1, 5, 7, 35, 631, 941, 3155, 4417, 4705, 6587, 22085, 32935, 593771, 2968855, 4156397, 20781985]

約数ペア:

[(1, 20781985), (5, 4156397), (7, 2968855), (35, 593771), (631, 32935), (941, 22085), (3155, 6587), (4417, 4705)]