81539864

素因数分解:

$2^3\times 7^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{331}}^1$

素因数の和:480

約数の個数: 64

約数和(自身を含む): 180714240

約数和(自身を除く): 99174376

約数列:

[1, 2, 4, 7, 8, 14, 28, 53, 56, 83, 106, 166, 212, 331, 332, 371, 424, 581, 662, 664, 742, 1162, 1324, 1484, 2317, 2324, 2648, 2968, 4399, 4634, 4648, 8798, 9268, 17543, 17596, 18536, 27473, 30793, 35086, 35192, 54946, 61586, 70172, 109892, 122801, 123172, 140344, 192311, 219784, 245602, 246344, 384622, 491204, 769244, 982408, 1456069, 1538488, 2912138, 5824276, 10192483, 11648552, 20384966, 40769932, 81539864]

約数ペア:

[(1, 81539864), (2, 40769932), (4, 20384966), (7, 11648552), (8, 10192483), (14, 5824276), (28, 2912138), (53, 1538488), (56, 1456069), (83, 982408), (106, 769244), (166, 491204), (212, 384622), (331, 246344), (332, 245602), (371, 219784), (424, 192311), (581, 140344), (662, 123172), (664, 122801), (742, 109892), (1162, 70172), (1324, 61586), (1484, 54946), (2317, 35192), (2324, 35086), (2648, 30793), (2968, 27473), (4399, 18536), (4634, 17596), (4648, 17543), (8798, 9268)]