249006520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{889309}}^1$

素因数の和:889327

約数の個数: 32

約数和(自身を含む): 640303200

約数和(自身を除く): 391296680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 889309, 1778618, 3557236, 4446545, 6225163, 7114472, 8893090, 12450326, 17786180, 24900652, 31125815, 35572360, 49801304, 62251630, 124503260, 249006520]

約数ペア:

[(1, 249006520), (2, 124503260), (4, 62251630), (5, 49801304), (7, 35572360), (8, 31125815), (10, 24900652), (14, 17786180), (20, 12450326), (28, 8893090), (35, 7114472), (40, 6225163), (56, 4446545), (70, 3557236), (140, 1778618), (280, 889309)]