21576496820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{26312801}}^1$

素因数の和:26312851

約数の個数: 24

約数和(自身を含む): 46415782728

約数和(自身を除く): 24839285908

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 26312801, 52625602, 105251204, 131564005, 263128010, 526256020, 1078824841, 2157649682, 4315299364, 5394124205, 10788248410, 21576496820]

約数ペア:

[(1, 21576496820), (2, 10788248410), (4, 5394124205), (5, 4315299364), (10, 2157649682), (20, 1078824841), (41, 526256020), (82, 263128010), (164, 131564005), (205, 105251204), (410, 52625602), (820, 26312801)]