21357656

素因数分解:

$2^3\times {\mathrm{389}}^1\times {\mathrm{6863}}^1$

素因数の和:7258

約数の個数: 16

約数和(自身を含む): 40154400

約数和(自身を除く): 18796744

約数列:

[1, 2, 4, 8, 389, 778, 1556, 3112, 6863, 13726, 27452, 54904, 2669707, 5339414, 10678828, 21357656]

約数ペア:

[(1, 21357656), (2, 10678828), (4, 5339414), (8, 2669707), (389, 54904), (778, 27452), (1556, 13726), (3112, 6863)]