81145625

素因数分解:

$5^4\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1$

素因数の和:108

約数の個数: 60

約数和(自身を含む): 118415220

約数和(自身を除く): 37269595

約数列:

[1, 5, 11, 25, 29, 37, 55, 121, 125, 145, 185, 275, 319, 407, 605, 625, 725, 925, 1073, 1375, 1595, 2035, 3025, 3509, 3625, 4477, 4625, 5365, 6875, 7975, 10175, 11803, 15125, 17545, 18125, 22385, 23125, 26825, 39875, 50875, 59015, 75625, 87725, 111925, 129833, 134125, 199375, 254375, 295075, 438625, 559625, 649165, 670625, 1475375, 2193125, 2798125, 3245825, 7376875, 16229125, 81145625]

約数ペア:

[(1, 81145625), (5, 16229125), (11, 7376875), (25, 3245825), (29, 2798125), (37, 2193125), (55, 1475375), (121, 670625), (125, 649165), (145, 559625), (185, 438625), (275, 295075), (319, 254375), (407, 199375), (605, 134125), (625, 129833), (725, 111925), (925, 87725), (1073, 75625), (1375, 59015), (1595, 50875), (2035, 39875), (3025, 26825), (3509, 23125), (3625, 22385), (4477, 18125), (4625, 17545), (5365, 15125), (6875, 11803), (7975, 10175)]