19872640

素因数分解:

$2^7\times 5^1\times {\mathrm{31051}}^1$

素因数の和:31070

約数の個数: 32

約数和(自身を含む): 47509560

約数和(自身を除く): 27636920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 31051, 62102, 124204, 155255, 248408, 310510, 496816, 621020, 993632, 1242040, 1987264, 2484080, 3974528, 4968160, 9936320, 19872640]

約数ペア:

[(1, 19872640), (2, 9936320), (4, 4968160), (5, 3974528), (8, 2484080), (10, 1987264), (16, 1242040), (20, 993632), (32, 621020), (40, 496816), (64, 310510), (80, 248408), (128, 155255), (160, 124204), (320, 62102), (640, 31051)]