20001367720

素因数分解:

$2^3\times 5^1\times {\mathrm{1153}}^1\times {\mathrm{433681}}^1$

素因数の和:434845

約数の個数: 32

約数和(自身を含む): 45042212520

約数和(自身を除く): 25040844800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1153, 2306, 4612, 5765, 9224, 11530, 23060, 46120, 433681, 867362, 1734724, 2168405, 3469448, 4336810, 8673620, 17347240, 500034193, 1000068386, 2000136772, 2500170965, 4000273544, 5000341930, 10000683860, 20001367720]

約数ペア:

[(1, 20001367720), (2, 10000683860), (4, 5000341930), (5, 4000273544), (8, 2500170965), (10, 2000136772), (20, 1000068386), (40, 500034193), (1153, 17347240), (2306, 8673620), (4612, 4336810), (5765, 3469448), (9224, 2168405), (11530, 1734724), (23060, 867362), (46120, 433681)]