81314525

素因数分解:

$5^2\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{751}}^1$

素因数の和:893

約数の個数: 24

約数和(自身を含む): 104064768

約数和(自身を除く): 22750243

約数列:

[1, 5, 25, 61, 71, 305, 355, 751, 1525, 1775, 3755, 4331, 18775, 21655, 45811, 53321, 108275, 229055, 266605, 1145275, 1333025, 3252581, 16262905, 81314525]

約数ペア:

[(1, 81314525), (5, 16262905), (25, 3252581), (61, 1333025), (71, 1145275), (305, 266605), (355, 229055), (751, 108275), (1525, 53321), (1775, 45811), (3755, 21655), (4331, 18775)]