15981581

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{421}}^1$

素因数の和:485

約数の個数: 32

約数和(自身を含む): 21876480

約数和(自身を除く): 5894899

約数列:

[1, 7, 11, 17, 29, 77, 119, 187, 203, 319, 421, 493, 1309, 2233, 2947, 3451, 4631, 5423, 7157, 12209, 32417, 37961, 50099, 78727, 85463, 134299, 207553, 551089, 940093, 1452871, 2283083, 15981581]

約数ペア:

[(1, 15981581), (7, 2283083), (11, 1452871), (17, 940093), (29, 551089), (77, 207553), (119, 134299), (187, 85463), (203, 78727), (319, 50099), (421, 37961), (493, 32417), (1309, 12209), (2233, 7157), (2947, 5423), (3451, 4631)]