21010778

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{257}}^1\times {\mathrm{997}}^1$

素因数の和:1297

約数の個数: 16

約数和(自身を含む): 32442984

約数和(自身を除く): 11432206

約数列:

[1, 2, 41, 82, 257, 514, 997, 1994, 10537, 21074, 40877, 81754, 256229, 512458, 10505389, 21010778]

約数ペア:

[(1, 21010778), (2, 10505389), (41, 512458), (82, 256229), (257, 81754), (514, 40877), (997, 21074), (1994, 10537)]