18867225

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{523}}^1$

素因数の和:586

約数の個数: 48

約数和(自身を含む): 34567232

約数和(自身を除く): 15700007

約数列:

[1, 3, 5, 13, 15, 25, 37, 39, 65, 75, 111, 185, 195, 325, 481, 523, 555, 925, 975, 1443, 1569, 2405, 2615, 2775, 6799, 7215, 7845, 12025, 13075, 19351, 20397, 33995, 36075, 39225, 58053, 96755, 101985, 169975, 251563, 290265, 483775, 509925, 754689, 1257815, 1451325, 3773445, 6289075, 18867225]

約数ペア:

[(1, 18867225), (3, 6289075), (5, 3773445), (13, 1451325), (15, 1257815), (25, 754689), (37, 509925), (39, 483775), (65, 290265), (75, 251563), (111, 169975), (185, 101985), (195, 96755), (325, 58053), (481, 39225), (523, 36075), (555, 33995), (925, 20397), (975, 19351), (1443, 13075), (1569, 12025), (2405, 7845), (2615, 7215), (2775, 6799)]