20779578

素因数分解:

$2^1\times 3^4\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1$

素因数の和:233

約数の個数: 80

約数和(自身を含む): 50471520

約数和(自身を除く): 29691942

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 38, 43, 54, 57, 81, 86, 114, 129, 157, 162, 171, 258, 314, 342, 387, 471, 513, 774, 817, 942, 1026, 1161, 1413, 1539, 1634, 2322, 2451, 2826, 2983, 3078, 3483, 4239, 4902, 5966, 6751, 6966, 7353, 8478, 8949, 12717, 13502, 14706, 17898, 20253, 22059, 25434, 26847, 40506, 44118, 53694, 60759, 66177, 80541, 121518, 128269, 132354, 161082, 182277, 241623, 256538, 364554, 384807, 483246, 546831, 769614, 1093662, 1154421, 2308842, 3463263, 6926526, 10389789, 20779578]

約数ペア:

[(1, 20779578), (2, 10389789), (3, 6926526), (6, 3463263), (9, 2308842), (18, 1154421), (19, 1093662), (27, 769614), (38, 546831), (43, 483246), (54, 384807), (57, 364554), (81, 256538), (86, 241623), (114, 182277), (129, 161082), (157, 132354), (162, 128269), (171, 121518), (258, 80541), (314, 66177), (342, 60759), (387, 53694), (471, 44118), (513, 40506), (774, 26847), (817, 25434), (942, 22059), (1026, 20253), (1161, 17898), (1413, 14706), (1539, 13502), (1634, 12717), (2322, 8949), (2451, 8478), (2826, 7353), (2983, 6966), (3078, 6751), (3483, 5966), (4239, 4902)]