858647420

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1047131}}^1$

素因数の和:1047181

約数の個数: 24

約数和(自身を含む): 1847140848

約数和(自身を除く): 988493428

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 1047131, 2094262, 4188524, 5235655, 10471310, 20942620, 42932371, 85864742, 171729484, 214661855, 429323710, 858647420]

約数ペア:

[(1, 858647420), (2, 429323710), (4, 214661855), (5, 171729484), (10, 85864742), (20, 42932371), (41, 20942620), (82, 10471310), (164, 5235655), (205, 4188524), (410, 2094262), (820, 1047131)]