20413925

素因数分解:

$5^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{743}}^1$

素因数の和:917

約数の個数: 24

約数和(自身を含む): 29152896

約数和(自身を除く): 8738971

約数列:

[1, 5, 7, 25, 35, 157, 175, 743, 785, 1099, 3715, 3925, 5201, 5495, 18575, 26005, 27475, 116651, 130025, 583255, 816557, 2916275, 4082785, 20413925]

約数ペア:

[(1, 20413925), (5, 4082785), (7, 2916275), (25, 816557), (35, 583255), (157, 130025), (175, 116651), (743, 27475), (785, 26005), (1099, 18575), (3715, 5495), (3925, 5201)]