89417780

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{28477}}^1$

素因数の和:28643

約数の個数: 24

約数和(自身を含む): 188980008

約数和(自身を除く): 99562228

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 28477, 56954, 113908, 142385, 284770, 569540, 4470889, 8941778, 17883556, 22354445, 44708890, 89417780]

約数ペア:

[(1, 89417780), (2, 44708890), (4, 22354445), (5, 17883556), (10, 8941778), (20, 4470889), (157, 569540), (314, 284770), (628, 142385), (785, 113908), (1570, 56954), (3140, 28477)]