21244360

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{7927}}^1$

素因数の和:8005

約数の個数: 32

約数和(自身を含む): 48519360

約数和(自身を除く): 27275000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 7927, 15854, 31708, 39635, 63416, 79270, 158540, 317080, 531109, 1062218, 2124436, 2655545, 4248872, 5311090, 10622180, 21244360]

約数ペア:

[(1, 21244360), (2, 10622180), (4, 5311090), (5, 4248872), (8, 2655545), (10, 2124436), (20, 1062218), (40, 531109), (67, 317080), (134, 158540), (268, 79270), (335, 63416), (536, 39635), (670, 31708), (1340, 15854), (2680, 7927)]