256571854

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{4261}}^1$

素因数の和:4321

約数の個数: 64

約数和(自身を含む): 530260992

約数和(自身を除く): 273689138

約数列:

[1, 2, 7, 11, 14, 17, 22, 23, 34, 46, 77, 119, 154, 161, 187, 238, 253, 322, 374, 391, 506, 782, 1309, 1771, 2618, 2737, 3542, 4261, 4301, 5474, 8522, 8602, 29827, 30107, 46871, 59654, 60214, 72437, 93742, 98003, 144874, 196006, 328097, 507059, 656194, 686021, 796807, 1014118, 1078033, 1372042, 1593614, 1666051, 2156066, 3332102, 5577649, 7546231, 11155298, 11662357, 15092462, 18326561, 23324714, 36653122, 128285927, 256571854]

約数ペア:

[(1, 256571854), (2, 128285927), (7, 36653122), (11, 23324714), (14, 18326561), (17, 15092462), (22, 11662357), (23, 11155298), (34, 7546231), (46, 5577649), (77, 3332102), (119, 2156066), (154, 1666051), (161, 1593614), (187, 1372042), (238, 1078033), (253, 1014118), (322, 796807), (374, 686021), (391, 656194), (506, 507059), (782, 328097), (1309, 196006), (1771, 144874), (2618, 98003), (2737, 93742), (3542, 72437), (4261, 60214), (4301, 59654), (5474, 46871), (8522, 30107), (8602, 29827)]