81267228

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{1637}}^1$

素因数の和:1851

約数の個数: 72

約数和(自身を含む): 236107872

約数和(自身を除く): 154840644

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 197, 252, 394, 591, 788, 1182, 1379, 1637, 1773, 2364, 2758, 3274, 3546, 4137, 4911, 5516, 6548, 7092, 8274, 9822, 11459, 12411, 14733, 16548, 19644, 22918, 24822, 29466, 34377, 45836, 49644, 58932, 68754, 103131, 137508, 206262, 322489, 412524, 644978, 967467, 1289956, 1934934, 2257423, 2902401, 3869868, 4514846, 5804802, 6772269, 9029692, 11609604, 13544538, 20316807, 27089076, 40633614, 81267228]

約数ペア:

[(1, 81267228), (2, 40633614), (3, 27089076), (4, 20316807), (6, 13544538), (7, 11609604), (9, 9029692), (12, 6772269), (14, 5804802), (18, 4514846), (21, 3869868), (28, 2902401), (36, 2257423), (42, 1934934), (63, 1289956), (84, 967467), (126, 644978), (197, 412524), (252, 322489), (394, 206262), (591, 137508), (788, 103131), (1182, 68754), (1379, 58932), (1637, 49644), (1773, 45836), (2364, 34377), (2758, 29466), (3274, 24822), (3546, 22918), (4137, 19644), (4911, 16548), (5516, 14733), (6548, 12411), (7092, 11459), (8274, 9822)]