644265

素因数分解:

$3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{139}}^1$

素因数の和:253

約数の個数: 24

約数和(自身を含む): 1135680

約数和(自身を除く): 491415

約数列:

[1, 3, 5, 9, 15, 45, 103, 139, 309, 417, 515, 695, 927, 1251, 1545, 2085, 4635, 6255, 14317, 42951, 71585, 128853, 214755, 644265]

約数ペア:

[(1, 644265), (3, 214755), (5, 128853), (9, 71585), (15, 42951), (45, 14317), (103, 6255), (139, 4635), (309, 2085), (417, 1545), (515, 1251), (695, 927)]