81634728

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{571}}^1$

素因数の和:647

約数の個数: 128

約数和(自身を含む): 250398720

約数和(自身を除く): 168763992

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 23, 24, 28, 37, 42, 46, 56, 69, 74, 84, 92, 111, 138, 148, 161, 168, 184, 222, 259, 276, 296, 322, 444, 483, 518, 552, 571, 644, 777, 851, 888, 966, 1036, 1142, 1288, 1554, 1702, 1713, 1932, 2072, 2284, 2553, 3108, 3404, 3426, 3864, 3997, 4568, 5106, 5957, 6216, 6808, 6852, 7994, 10212, 11914, 11991, 13133, 13704, 15988, 17871, 20424, 21127, 23828, 23982, 26266, 31976, 35742, 39399, 42254, 47656, 47964, 52532, 63381, 71484, 78798, 84508, 91931, 95928, 105064, 126762, 142968, 147889, 157596, 169016, 183862, 253524, 275793, 295778, 315192, 367724, 443667, 485921, 507048, 551586, 591556, 735448, 887334, 971842, 1103172, 1183112, 1457763, 1774668, 1943684, 2206344, 2915526, 3401447, 3549336, 3887368, 5831052, 6802894, 10204341, 11662104, 13605788, 20408682, 27211576, 40817364, 81634728]

約数ペア:

[(1, 81634728), (2, 40817364), (3, 27211576), (4, 20408682), (6, 13605788), (7, 11662104), (8, 10204341), (12, 6802894), (14, 5831052), (21, 3887368), (23, 3549336), (24, 3401447), (28, 2915526), (37, 2206344), (42, 1943684), (46, 1774668), (56, 1457763), (69, 1183112), (74, 1103172), (84, 971842), (92, 887334), (111, 735448), (138, 591556), (148, 551586), (161, 507048), (168, 485921), (184, 443667), (222, 367724), (259, 315192), (276, 295778), (296, 275793), (322, 253524), (444, 183862), (483, 169016), (518, 157596), (552, 147889), (571, 142968), (644, 126762), (777, 105064), (851, 95928), (888, 91931), (966, 84508), (1036, 78798), (1142, 71484), (1288, 63381), (1554, 52532), (1702, 47964), (1713, 47656), (1932, 42254), (2072, 39399), (2284, 35742), (2553, 31976), (3108, 26266), (3404, 23982), (3426, 23828), (3864, 21127), (3997, 20424), (4568, 17871), (5106, 15988), (5957, 13704), (6216, 13133), (6808, 11991), (6852, 11914), (7994, 10212)]