18648025

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1$

素因数の和:166

約数の個数: 48

約数和(自身を含む): 27498240

約数和(自身を除く): 8850215

約数列:

[1, 5, 11, 19, 25, 43, 55, 83, 95, 209, 215, 275, 415, 473, 475, 817, 913, 1045, 1075, 1577, 2075, 2365, 3569, 4085, 4565, 5225, 7885, 8987, 11825, 17347, 17845, 20425, 22825, 39259, 39425, 44935, 67811, 86735, 89225, 196295, 224675, 339055, 433675, 745921, 981475, 1695275, 3729605, 18648025]

約数ペア:

[(1, 18648025), (5, 3729605), (11, 1695275), (19, 981475), (25, 745921), (43, 433675), (55, 339055), (83, 224675), (95, 196295), (209, 89225), (215, 86735), (275, 67811), (415, 44935), (473, 39425), (475, 39259), (817, 22825), (913, 20425), (1045, 17845), (1075, 17347), (1577, 11825), (2075, 8987), (2365, 7885), (3569, 5225), (4085, 4565)]