81355755

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{479}}^1$

素因数の和:580

約数の個数: 48

約数和(自身を含む): 143354880

約数和(自身を除く): 61999125

約数列:

[1, 3, 5, 13, 15, 39, 65, 67, 169, 195, 201, 335, 479, 507, 845, 871, 1005, 1437, 2395, 2535, 2613, 4355, 6227, 7185, 11323, 13065, 18681, 31135, 32093, 33969, 56615, 80951, 93405, 96279, 160465, 169845, 242853, 404755, 417209, 481395, 1214265, 1251627, 2086045, 5423717, 6258135, 16271151, 27118585, 81355755]

約数ペア:

[(1, 81355755), (3, 27118585), (5, 16271151), (13, 6258135), (15, 5423717), (39, 2086045), (65, 1251627), (67, 1214265), (169, 481395), (195, 417209), (201, 404755), (335, 242853), (479, 169845), (507, 160465), (845, 96279), (871, 93405), (1005, 80951), (1437, 56615), (2395, 33969), (2535, 32093), (2613, 31135), (4355, 18681), (6227, 13065), (7185, 11323)]