21085688

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{202747}}^1$

素因数の和:202766

約数の個数: 16

約数和(自身を含む): 42577080

約数和(自身を除く): 21491392

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 202747, 405494, 810988, 1621976, 2635711, 5271422, 10542844, 21085688]

約数ペア:

[(1, 21085688), (2, 10542844), (4, 5271422), (8, 2635711), (13, 1621976), (26, 810988), (52, 405494), (104, 202747)]