81800225

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{1019}}^1$

素因数の和:1074

約数の個数: 36

約数和(自身を含む): 115729200

約数和(自身を除く): 33928975

約数列:

[1, 5, 13, 19, 25, 65, 95, 169, 247, 325, 475, 845, 1019, 1235, 3211, 4225, 5095, 6175, 13247, 16055, 19361, 25475, 66235, 80275, 96805, 172211, 251693, 331175, 484025, 861055, 1258465, 3272009, 4305275, 6292325, 16360045, 81800225]

約数ペア:

[(1, 81800225), (5, 16360045), (13, 6292325), (19, 4305275), (25, 3272009), (65, 1258465), (95, 861055), (169, 484025), (247, 331175), (325, 251693), (475, 172211), (845, 96805), (1019, 80275), (1235, 66235), (3211, 25475), (4225, 19361), (5095, 16055), (6175, 13247)]