78198940

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{1151}}^1$

素因数の和:1282

約数の個数: 48

約数和(自身を含む): 170311680

約数和(自身を除く): 92112740

約数列:

[1, 2, 4, 5, 10, 20, 43, 79, 86, 158, 172, 215, 316, 395, 430, 790, 860, 1151, 1580, 2302, 3397, 4604, 5755, 6794, 11510, 13588, 16985, 23020, 33970, 49493, 67940, 90929, 98986, 181858, 197972, 247465, 363716, 454645, 494930, 909290, 989860, 1818580, 3909947, 7819894, 15639788, 19549735, 39099470, 78198940]

約数ペア:

[(1, 78198940), (2, 39099470), (4, 19549735), (5, 15639788), (10, 7819894), (20, 3909947), (43, 1818580), (79, 989860), (86, 909290), (158, 494930), (172, 454645), (215, 363716), (316, 247465), (395, 197972), (430, 181858), (790, 98986), (860, 90929), (1151, 67940), (1580, 49493), (2302, 33970), (3397, 23020), (4604, 16985), (5755, 13588), (6794, 11510)]