81229655

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:180

約数の個数: 64

約数和(自身を含む): 120839040

約数和(自身を除く): 39609385

約数列:

[1, 5, 13, 17, 19, 53, 65, 73, 85, 95, 221, 247, 265, 323, 365, 689, 901, 949, 1007, 1105, 1235, 1241, 1387, 1615, 3445, 3869, 4199, 4505, 4745, 5035, 6205, 6935, 11713, 13091, 16133, 17119, 18031, 19345, 20995, 23579, 50297, 58565, 65455, 65773, 73511, 80665, 85595, 90155, 117895, 222547, 251485, 306527, 328865, 367555, 855049, 955643, 1112735, 1249687, 1532635, 4275245, 4778215, 6248435, 16245931, 81229655]

約数ペア:

[(1, 81229655), (5, 16245931), (13, 6248435), (17, 4778215), (19, 4275245), (53, 1532635), (65, 1249687), (73, 1112735), (85, 955643), (95, 855049), (221, 367555), (247, 328865), (265, 306527), (323, 251485), (365, 222547), (689, 117895), (901, 90155), (949, 85595), (1007, 80665), (1105, 73511), (1235, 65773), (1241, 65455), (1387, 58565), (1615, 50297), (3445, 23579), (3869, 20995), (4199, 19345), (4505, 18031), (4745, 17119), (5035, 16133), (6205, 13091), (6935, 11713)]