129552620

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{157991}}^1$

素因数の和:158041

約数の個数: 24

約数和(自身を含む): 278697888

約数和(自身を除く): 149145268

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 157991, 315982, 631964, 789955, 1579910, 3159820, 6477631, 12955262, 25910524, 32388155, 64776310, 129552620]

約数ペア:

[(1, 129552620), (2, 64776310), (4, 32388155), (5, 25910524), (10, 12955262), (20, 6477631), (41, 3159820), (82, 1579910), (164, 789955), (205, 631964), (410, 315982), (820, 157991)]