21419656

素因数分解:

$2^3\times {\mathrm{641}}^1\times {\mathrm{4177}}^1$

素因数の和:4824

約数の個数: 16

約数和(自身を含む): 40234140

約数和(自身を除く): 18814484

約数列:

[1, 2, 4, 8, 641, 1282, 2564, 4177, 5128, 8354, 16708, 33416, 2677457, 5354914, 10709828, 21419656]

約数ペア:

[(1, 21419656), (2, 10709828), (4, 5354914), (8, 2677457), (641, 33416), (1282, 16708), (2564, 8354), (4177, 5128)]