12978880

素因数分解:

$2^6\times 5^1\times {\mathrm{40559}}^1$

素因数の和:40576

約数の個数: 28

約数和(自身を含む): 30906720

約数和(自身を除く): 17927840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 40559, 81118, 162236, 202795, 324472, 405590, 648944, 811180, 1297888, 1622360, 2595776, 3244720, 6489440, 12978880]

約数ペア:

[(1, 12978880), (2, 6489440), (4, 3244720), (5, 2595776), (8, 1622360), (10, 1297888), (16, 811180), (20, 648944), (32, 405590), (40, 324472), (64, 202795), (80, 162236), (160, 81118), (320, 40559)]