81661012

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{359}}^1$

素因数の和:496

約数の個数: 48

約数和(自身を含む): 156643200

約数和(自身を除く): 74982188

約数列:

[1, 2, 4, 19, 38, 41, 73, 76, 82, 146, 164, 292, 359, 718, 779, 1387, 1436, 1558, 2774, 2993, 3116, 5548, 5986, 6821, 11972, 13642, 14719, 26207, 27284, 29438, 52414, 56867, 58876, 104828, 113734, 227468, 279661, 497933, 559322, 995866, 1074487, 1118644, 1991732, 2148974, 4297948, 20415253, 40830506, 81661012]

約数ペア:

[(1, 81661012), (2, 40830506), (4, 20415253), (19, 4297948), (38, 2148974), (41, 1991732), (73, 1118644), (76, 1074487), (82, 995866), (146, 559322), (164, 497933), (292, 279661), (359, 227468), (718, 113734), (779, 104828), (1387, 58876), (1436, 56867), (1558, 52414), (2774, 29438), (2993, 27284), (3116, 26207), (5548, 14719), (5986, 13642), (6821, 11972)]