128438950

素因数分解:

$2^1\times 5^2\times {\mathrm{131}}^1\times {\mathrm{19609}}^1$

素因数の和:19752

約数の個数: 24

約数和(自身を含む): 240732360

約数和(自身を除く): 112293410

約数列:

[1, 2, 5, 10, 25, 50, 131, 262, 655, 1310, 3275, 6550, 19609, 39218, 98045, 196090, 490225, 980450, 2568779, 5137558, 12843895, 25687790, 64219475, 128438950]

約数ペア:

[(1, 128438950), (2, 64219475), (5, 25687790), (10, 12843895), (25, 5137558), (50, 2568779), (131, 980450), (262, 490225), (655, 196090), (1310, 98045), (3275, 39218), (6550, 19609)]