420084760

素因数分解:

$2^3\times 5^1\times {\mathrm{643}}^1\times {\mathrm{16333}}^1$

素因数の和:16987

約数の個数: 32

約数和(自身を含む): 946718640

約数和(自身を除く): 526633880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 643, 1286, 2572, 3215, 5144, 6430, 12860, 16333, 25720, 32666, 65332, 81665, 130664, 163330, 326660, 653320, 10502119, 21004238, 42008476, 52510595, 84016952, 105021190, 210042380, 420084760]

約数ペア:

[(1, 420084760), (2, 210042380), (4, 105021190), (5, 84016952), (8, 52510595), (10, 42008476), (20, 21004238), (40, 10502119), (643, 653320), (1286, 326660), (2572, 163330), (3215, 130664), (5144, 81665), (6430, 65332), (12860, 32666), (16333, 25720)]