81919025

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{229}}^1\times {\mathrm{349}}^1$

素因数の和:629

約数の個数: 24

約数和(自身を含む): 104811000

約数和(自身を除く): 22891975

約数列:

[1, 5, 25, 41, 205, 229, 349, 1025, 1145, 1745, 5725, 8725, 9389, 14309, 46945, 71545, 79921, 234725, 357725, 399605, 1998025, 3276761, 16383805, 81919025]

約数ペア:

[(1, 81919025), (5, 16383805), (25, 3276761), (41, 1998025), (205, 399605), (229, 357725), (349, 234725), (1025, 79921), (1145, 71545), (1745, 46945), (5725, 14309), (8725, 9389)]