19720779615

素因数分解:

$3^4\times 5^1\times {\mathrm{3329}}^1\times {\mathrm{14627}}^1$

素因数の和:17973

約数の個数: 40

約数和(自身を含む): 35364360240

約数和(自身を除く): 15643580625

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 3329, 9987, 14627, 16645, 29961, 43881, 49935, 73135, 89883, 131643, 149805, 219405, 269649, 394929, 449415, 658215, 1184787, 1348245, 1974645, 5923935, 48693283, 146079849, 243466415, 438239547, 730399245, 1314718641, 2191197735, 3944155923, 6573593205, 19720779615]

約数ペア:

[(1, 19720779615), (3, 6573593205), (5, 3944155923), (9, 2191197735), (15, 1314718641), (27, 730399245), (45, 438239547), (81, 243466415), (135, 146079849), (405, 48693283), (3329, 5923935), (9987, 1974645), (14627, 1348245), (16645, 1184787), (29961, 658215), (43881, 449415), (49935, 394929), (73135, 269649), (89883, 219405), (131643, 149805)]