21791328

素因数分解:

$2^5\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{919}}^1$

素因数の和:964

約数の個数: 96

約数和(自身を含む): 64915200

約数和(自身を除く): 43123872

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 19, 24, 26, 32, 38, 39, 48, 52, 57, 76, 78, 96, 104, 114, 152, 156, 208, 228, 247, 304, 312, 416, 456, 494, 608, 624, 741, 912, 919, 988, 1248, 1482, 1824, 1838, 1976, 2757, 2964, 3676, 3952, 5514, 5928, 7352, 7904, 11028, 11856, 11947, 14704, 17461, 22056, 23712, 23894, 29408, 34922, 35841, 44112, 47788, 52383, 69844, 71682, 88224, 95576, 104766, 139688, 143364, 191152, 209532, 226993, 279376, 286728, 382304, 419064, 453986, 558752, 573456, 680979, 838128, 907972, 1146912, 1361958, 1676256, 1815944, 2723916, 3631888, 5447832, 7263776, 10895664, 21791328]

約数ペア:

[(1, 21791328), (2, 10895664), (3, 7263776), (4, 5447832), (6, 3631888), (8, 2723916), (12, 1815944), (13, 1676256), (16, 1361958), (19, 1146912), (24, 907972), (26, 838128), (32, 680979), (38, 573456), (39, 558752), (48, 453986), (52, 419064), (57, 382304), (76, 286728), (78, 279376), (96, 226993), (104, 209532), (114, 191152), (152, 143364), (156, 139688), (208, 104766), (228, 95576), (247, 88224), (304, 71682), (312, 69844), (416, 52383), (456, 47788), (494, 44112), (608, 35841), (624, 34922), (741, 29408), (912, 23894), (919, 23712), (988, 22056), (1248, 17461), (1482, 14704), (1824, 11947), (1838, 11856), (1976, 11028), (2757, 7904), (2964, 7352), (3676, 5928), (3952, 5514)]