19968156940

素因数分解:

$2^2\times 5^1\times {\mathrm{383}}^1\times {\mathrm{2606809}}^1$

素因数の和:2607201

約数の個数: 24

約数和(自身を含む): 42042631680

約数和(自身を除く): 22074474740

約数列:

[1, 2, 4, 5, 10, 20, 383, 766, 1532, 1915, 3830, 7660, 2606809, 5213618, 10427236, 13034045, 26068090, 52136180, 998407847, 1996815694, 3993631388, 4992039235, 9984078470, 19968156940]

約数ペア:

[(1, 19968156940), (2, 9984078470), (4, 4992039235), (5, 3993631388), (10, 1996815694), (20, 998407847), (383, 52136180), (766, 26068090), (1532, 13034045), (1915, 10427236), (3830, 5213618), (7660, 2606809)]