81620084

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{311}}^1$

素因数の和:445

約数の個数: 72

約数和(自身を含む): 181254528

約数和(自身を除く): 99634444

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 49, 52, 91, 98, 103, 182, 196, 206, 311, 364, 412, 622, 637, 721, 1244, 1274, 1339, 1442, 2177, 2548, 2678, 2884, 4043, 4354, 5047, 5356, 8086, 8708, 9373, 10094, 15239, 16172, 18746, 20188, 28301, 30478, 32033, 37492, 56602, 60956, 64066, 65611, 113204, 128132, 131222, 198107, 224231, 262444, 396214, 416429, 448462, 792428, 832858, 896924, 1569617, 1665716, 2915003, 3139234, 5830006, 6278468, 11660012, 20405021, 40810042, 81620084]

約数ペア:

[(1, 81620084), (2, 40810042), (4, 20405021), (7, 11660012), (13, 6278468), (14, 5830006), (26, 3139234), (28, 2915003), (49, 1665716), (52, 1569617), (91, 896924), (98, 832858), (103, 792428), (182, 448462), (196, 416429), (206, 396214), (311, 262444), (364, 224231), (412, 198107), (622, 131222), (637, 128132), (721, 113204), (1244, 65611), (1274, 64066), (1339, 60956), (1442, 56602), (2177, 37492), (2548, 32033), (2678, 30478), (2884, 28301), (4043, 20188), (4354, 18746), (5047, 16172), (5356, 15239), (8086, 10094), (8708, 9373)]