131253780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{312509}}^1$

素因数の和:312528

約数の個数: 48

約数和(自身を含む): 420013440

約数和(自身を除く): 288759660

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 312509, 625018, 937527, 1250036, 1562545, 1875054, 2187563, 3125090, 3750108, 4375126, 4687635, 6250180, 6562689, 8750252, 9375270, 10937815, 13125378, 18750540, 21875630, 26250756, 32813445, 43751260, 65626890, 131253780]

約数ペア:

[(1, 131253780), (2, 65626890), (3, 43751260), (4, 32813445), (5, 26250756), (6, 21875630), (7, 18750540), (10, 13125378), (12, 10937815), (14, 9375270), (15, 8750252), (20, 6562689), (21, 6250180), (28, 4687635), (30, 4375126), (35, 3750108), (42, 3125090), (60, 2187563), (70, 1875054), (84, 1562545), (105, 1250036), (140, 937527), (210, 625018), (420, 312509)]