81721374

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{113}}^1\times {\mathrm{257}}^1$

素因数の和:449

約数の個数: 64

約数和(自身を含む): 192001536

約数和(自身を除く): 110280162

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 67, 113, 134, 201, 226, 257, 339, 402, 469, 514, 678, 771, 791, 938, 1407, 1542, 1582, 1799, 2373, 2814, 3598, 4746, 5397, 7571, 10794, 15142, 17219, 22713, 29041, 34438, 45426, 51657, 52997, 58082, 87123, 103314, 105994, 120533, 158991, 174246, 203287, 241066, 317982, 361599, 406574, 609861, 723198, 1219722, 1945747, 3891494, 5837241, 11674482, 13620229, 27240458, 40860687, 81721374]

約数ペア:

[(1, 81721374), (2, 40860687), (3, 27240458), (6, 13620229), (7, 11674482), (14, 5837241), (21, 3891494), (42, 1945747), (67, 1219722), (113, 723198), (134, 609861), (201, 406574), (226, 361599), (257, 317982), (339, 241066), (402, 203287), (469, 174246), (514, 158991), (678, 120533), (771, 105994), (791, 103314), (938, 87123), (1407, 58082), (1542, 52997), (1582, 51657), (1799, 45426), (2373, 34438), (2814, 29041), (3598, 22713), (4746, 17219), (5397, 15142), (7571, 10794)]