131271856

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{311}}^1$

素因数の和:410

約数の個数: 80

約数和(自身を含む): 282267648

約数和(自身を除く): 150995792

約数列:

[1, 2, 4, 8, 16, 23, 31, 37, 46, 62, 74, 92, 124, 148, 184, 248, 296, 311, 368, 496, 592, 622, 713, 851, 1147, 1244, 1426, 1702, 2294, 2488, 2852, 3404, 4588, 4976, 5704, 6808, 7153, 9176, 9641, 11408, 11507, 13616, 14306, 18352, 19282, 23014, 26381, 28612, 38564, 46028, 52762, 57224, 77128, 92056, 105524, 114448, 154256, 184112, 211048, 221743, 264661, 356717, 422096, 443486, 529322, 713434, 886972, 1058644, 1426868, 1773944, 2117288, 2853736, 3547888, 4234576, 5707472, 8204491, 16408982, 32817964, 65635928, 131271856]

約数ペア:

[(1, 131271856), (2, 65635928), (4, 32817964), (8, 16408982), (16, 8204491), (23, 5707472), (31, 4234576), (37, 3547888), (46, 2853736), (62, 2117288), (74, 1773944), (92, 1426868), (124, 1058644), (148, 886972), (184, 713434), (248, 529322), (296, 443486), (311, 422096), (368, 356717), (496, 264661), (592, 221743), (622, 211048), (713, 184112), (851, 154256), (1147, 114448), (1244, 105524), (1426, 92056), (1702, 77128), (2294, 57224), (2488, 52762), (2852, 46028), (3404, 38564), (4588, 28612), (4976, 26381), (5704, 23014), (6808, 19282), (7153, 18352), (9176, 14306), (9641, 13616), (11408, 11507)]