128473900

素因数分解:

$2^2\times 5^2\times {\mathrm{1284739}}^1$

素因数の和:1284753

約数の個数: 18

約数和(自身を含む): 278788580

約数和(自身を除く): 150314680

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 1284739, 2569478, 5138956, 6423695, 12847390, 25694780, 32118475, 64236950, 128473900]

約数ペア:

[(1, 128473900), (2, 64236950), (4, 32118475), (5, 25694780), (10, 12847390), (20, 6423695), (25, 5138956), (50, 2569478), (100, 1284739)]