20960440

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{9887}}^1$

素因数の和:9951

約数の個数: 32

約数和(自身を含む): 48055680

約数和(自身を除く): 27095240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 9887, 19774, 39548, 49435, 79096, 98870, 197740, 395480, 524011, 1048022, 2096044, 2620055, 4192088, 5240110, 10480220, 20960440]

約数ペア:

[(1, 20960440), (2, 10480220), (4, 5240110), (5, 4192088), (8, 2620055), (10, 2096044), (20, 1048022), (40, 524011), (53, 395480), (106, 197740), (212, 98870), (265, 79096), (424, 49435), (530, 39548), (1060, 19774), (2120, 9887)]