20783860

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61129}}^1$

素因数の和:61155

約数の個数: 24

約数和(自身を含む): 46214280

約数和(自身を除く): 25430420

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 61129, 122258, 244516, 305645, 611290, 1039193, 1222580, 2078386, 4156772, 5195965, 10391930, 20783860]

約数ペア:

[(1, 20783860), (2, 10391930), (4, 5195965), (5, 4156772), (10, 2078386), (17, 1222580), (20, 1039193), (34, 611290), (68, 305645), (85, 244516), (170, 122258), (340, 61129)]