40878025

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{2099}}^1$

素因数の和:2169

約数の個数: 24

約数和(自身を含む): 54684000

約数和(自身を除く): 13805975

約数列:

[1, 5, 19, 25, 41, 95, 205, 475, 779, 1025, 2099, 3895, 10495, 19475, 39881, 52475, 86059, 199405, 430295, 997025, 1635121, 2151475, 8175605, 40878025]

約数ペア:

[(1, 40878025), (5, 8175605), (19, 2151475), (25, 1635121), (41, 997025), (95, 430295), (205, 199405), (475, 86059), (779, 52475), (1025, 39881), (2099, 19475), (3895, 10495)]