31122540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{4021}}^1$

素因数の和:4079

約数の個数: 72

約数和(自身を含む): 96624528

約数和(自身を除く): 65501988

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 43, 45, 60, 86, 90, 129, 172, 180, 215, 258, 387, 430, 516, 645, 774, 860, 1290, 1548, 1935, 2580, 3870, 4021, 7740, 8042, 12063, 16084, 20105, 24126, 36189, 40210, 48252, 60315, 72378, 80420, 120630, 144756, 172903, 180945, 241260, 345806, 361890, 518709, 691612, 723780, 864515, 1037418, 1556127, 1729030, 2074836, 2593545, 3112254, 3458060, 5187090, 6224508, 7780635, 10374180, 15561270, 31122540]

約数ペア:

[(1, 31122540), (2, 15561270), (3, 10374180), (4, 7780635), (5, 6224508), (6, 5187090), (9, 3458060), (10, 3112254), (12, 2593545), (15, 2074836), (18, 1729030), (20, 1556127), (30, 1037418), (36, 864515), (43, 723780), (45, 691612), (60, 518709), (86, 361890), (90, 345806), (129, 241260), (172, 180945), (180, 172903), (215, 144756), (258, 120630), (387, 80420), (430, 72378), (516, 60315), (645, 48252), (774, 40210), (860, 36189), (1290, 24126), (1548, 20105), (1935, 16084), (2580, 12063), (3870, 8042), (4021, 7740)]