20774720

素因数分解:

$2^6\times 5^1\times {\mathrm{64921}}^1$

素因数の和:64938

約数の個数: 28

約数和(自身を含む): 49470564

約数和(自身を除く): 28695844

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 64921, 129842, 259684, 324605, 519368, 649210, 1038736, 1298420, 2077472, 2596840, 4154944, 5193680, 10387360, 20774720]

約数ペア:

[(1, 20774720), (2, 10387360), (4, 5193680), (5, 4154944), (8, 2596840), (10, 2077472), (16, 1298420), (20, 1038736), (32, 649210), (40, 519368), (64, 324605), (80, 259684), (160, 129842), (320, 64921)]