21260848

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:234

約数の個数: 80

約数和(自身を含む): 50552320

約数和(自身を除く): 29291472

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 56, 76, 97, 103, 112, 133, 152, 194, 206, 266, 304, 388, 412, 532, 679, 721, 776, 824, 1064, 1358, 1442, 1552, 1648, 1843, 1957, 2128, 2716, 2884, 3686, 3914, 5432, 5768, 7372, 7828, 9991, 10864, 11536, 12901, 13699, 14744, 15656, 19982, 25802, 27398, 29488, 31312, 39964, 51604, 54796, 69937, 79928, 103208, 109592, 139874, 159856, 189829, 206416, 219184, 279748, 379658, 559496, 759316, 1118992, 1328803, 1518632, 2657606, 3037264, 5315212, 10630424, 21260848]

約数ペア:

[(1, 21260848), (2, 10630424), (4, 5315212), (7, 3037264), (8, 2657606), (14, 1518632), (16, 1328803), (19, 1118992), (28, 759316), (38, 559496), (56, 379658), (76, 279748), (97, 219184), (103, 206416), (112, 189829), (133, 159856), (152, 139874), (194, 109592), (206, 103208), (266, 79928), (304, 69937), (388, 54796), (412, 51604), (532, 39964), (679, 31312), (721, 29488), (776, 27398), (824, 25802), (1064, 19982), (1358, 15656), (1442, 14744), (1552, 13699), (1648, 12901), (1843, 11536), (1957, 10864), (2128, 9991), (2716, 7828), (2884, 7372), (3686, 5768), (3914, 5432)]