131451903

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1$

素因数の和:186

約数の個数: 80

約数和(自身を含む): 226930176

約数和(自身を除く): 95478273

約数列:

[1, 3, 9, 11, 27, 33, 43, 47, 73, 81, 99, 129, 141, 219, 297, 387, 423, 473, 517, 657, 803, 891, 1161, 1269, 1419, 1551, 1971, 2021, 2409, 3139, 3431, 3483, 3807, 4257, 4653, 5913, 6063, 7227, 9417, 10293, 12771, 13959, 18189, 21681, 22231, 28251, 30879, 34529, 37741, 38313, 41877, 54567, 65043, 66693, 84753, 92637, 103587, 113223, 147533, 163701, 200079, 254259, 277911, 310761, 339669, 442599, 600237, 932283, 1019007, 1327797, 1622863, 1800711, 2796849, 3057021, 3983391, 4868589, 11950173, 14605767, 43817301, 131451903]

約数ペア:

[(1, 131451903), (3, 43817301), (9, 14605767), (11, 11950173), (27, 4868589), (33, 3983391), (43, 3057021), (47, 2796849), (73, 1800711), (81, 1622863), (99, 1327797), (129, 1019007), (141, 932283), (219, 600237), (297, 442599), (387, 339669), (423, 310761), (473, 277911), (517, 254259), (657, 200079), (803, 163701), (891, 147533), (1161, 113223), (1269, 103587), (1419, 92637), (1551, 84753), (1971, 66693), (2021, 65043), (2409, 54567), (3139, 41877), (3431, 38313), (3483, 37741), (3807, 34529), (4257, 30879), (4653, 28251), (5913, 22231), (6063, 21681), (7227, 18189), (9417, 13959), (10293, 12771)]