81856164

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{181}}^1\times {\mathrm{223}}^1$

素因数の和:437

約数の個数: 72

約数和(自身を含む): 208895232

約数和(自身を除く): 127039068

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 169, 181, 223, 338, 362, 446, 507, 543, 669, 676, 724, 892, 1014, 1086, 1338, 2028, 2172, 2353, 2676, 2899, 4706, 5798, 7059, 8697, 9412, 11596, 14118, 17394, 28236, 30589, 34788, 37687, 40363, 61178, 75374, 80726, 91767, 113061, 121089, 122356, 150748, 161452, 183534, 226122, 242178, 367068, 452244, 484356, 524719, 1049438, 1574157, 2098876, 3148314, 6296628, 6821347, 13642694, 20464041, 27285388, 40928082, 81856164]

約数ペア:

[(1, 81856164), (2, 40928082), (3, 27285388), (4, 20464041), (6, 13642694), (12, 6821347), (13, 6296628), (26, 3148314), (39, 2098876), (52, 1574157), (78, 1049438), (156, 524719), (169, 484356), (181, 452244), (223, 367068), (338, 242178), (362, 226122), (446, 183534), (507, 161452), (543, 150748), (669, 122356), (676, 121089), (724, 113061), (892, 91767), (1014, 80726), (1086, 75374), (1338, 61178), (2028, 40363), (2172, 37687), (2353, 34788), (2676, 30589), (2899, 28236), (4706, 17394), (5798, 14118), (7059, 11596), (8697, 9412)]