81385360

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{7649}}^1$

素因数の和:7688

約数の個数: 80

約数和(自身を含む): 227664000

約数和(自身を除く): 146278640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 35, 38, 40, 56, 70, 76, 80, 95, 112, 133, 140, 152, 190, 266, 280, 304, 380, 532, 560, 665, 760, 1064, 1330, 1520, 2128, 2660, 5320, 7649, 10640, 15298, 30596, 38245, 53543, 61192, 76490, 107086, 122384, 145331, 152980, 214172, 267715, 290662, 305960, 428344, 535430, 581324, 611920, 726655, 856688, 1017317, 1070860, 1162648, 1453310, 2034634, 2141720, 2325296, 2906620, 4069268, 4283440, 5086585, 5813240, 8138536, 10173170, 11626480, 16277072, 20346340, 40692680, 81385360]

約数ペア:

[(1, 81385360), (2, 40692680), (4, 20346340), (5, 16277072), (7, 11626480), (8, 10173170), (10, 8138536), (14, 5813240), (16, 5086585), (19, 4283440), (20, 4069268), (28, 2906620), (35, 2325296), (38, 2141720), (40, 2034634), (56, 1453310), (70, 1162648), (76, 1070860), (80, 1017317), (95, 856688), (112, 726655), (133, 611920), (140, 581324), (152, 535430), (190, 428344), (266, 305960), (280, 290662), (304, 267715), (380, 214172), (532, 152980), (560, 145331), (665, 122384), (760, 107086), (1064, 76490), (1330, 61192), (1520, 53543), (2128, 38245), (2660, 30596), (5320, 15298), (7649, 10640)]