21105510640

素因数分解:

$2^4\times 5^1\times {\mathrm{263818883}}^1$

素因数の和:263818896

約数の個数: 20

約数和(自身を含む): 49070312424

約数和(自身を除く): 27964801784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 263818883, 527637766, 1055275532, 1319094415, 2110551064, 2638188830, 4221102128, 5276377660, 10552755320, 21105510640]

約数ペア:

[(1, 21105510640), (2, 10552755320), (4, 5276377660), (5, 4221102128), (8, 2638188830), (10, 2110551064), (16, 1319094415), (20, 1055275532), (40, 527637766), (80, 263818883)]