17988460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{128489}}^1$

素因数の和:128505

約数の個数: 24

約数和(自身を含む): 43172640

約数和(自身を除く): 25184180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 128489, 256978, 513956, 642445, 899423, 1284890, 1798846, 2569780, 3597692, 4497115, 8994230, 17988460]

約数ペア:

[(1, 17988460), (2, 8994230), (4, 4497115), (5, 3597692), (7, 2569780), (10, 1798846), (14, 1284890), (20, 899423), (28, 642445), (35, 513956), (70, 256978), (140, 128489)]