681189873

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{691}}^1$

素因数の和:894

約数の個数: 64

約数和(自身を含む): 1175580672

約数和(自身を除く): 494390799

約数列:

[1, 3, 7, 13, 21, 23, 39, 69, 91, 157, 161, 273, 299, 471, 483, 691, 897, 1099, 2041, 2073, 2093, 3297, 3611, 4837, 6123, 6279, 8983, 10833, 14287, 14511, 15893, 25277, 26949, 42861, 46943, 47679, 62881, 75831, 108487, 111251, 140829, 188643, 206609, 325461, 328601, 333753, 619827, 759409, 985803, 1410331, 1446263, 2278227, 2495201, 4230993, 4338789, 7485603, 9872317, 17466407, 29616951, 32437613, 52399221, 97312839, 227063291, 681189873]

約数ペア:

[(1, 681189873), (3, 227063291), (7, 97312839), (13, 52399221), (21, 32437613), (23, 29616951), (39, 17466407), (69, 9872317), (91, 7485603), (157, 4338789), (161, 4230993), (273, 2495201), (299, 2278227), (471, 1446263), (483, 1410331), (691, 985803), (897, 759409), (1099, 619827), (2041, 333753), (2073, 328601), (2093, 325461), (3297, 206609), (3611, 188643), (4837, 140829), (6123, 111251), (6279, 108487), (8983, 75831), (10833, 62881), (14287, 47679), (14511, 46943), (15893, 42861), (25277, 26949)]