40909090

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{1549}}^1$

素因数の和:1714

約数の個数: 32

約数和(自身を含む): 78120000

約数和(自身を除く): 37210910

約数列:

[1, 2, 5, 10, 19, 38, 95, 139, 190, 278, 695, 1390, 1549, 2641, 3098, 5282, 7745, 13205, 15490, 26410, 29431, 58862, 147155, 215311, 294310, 430622, 1076555, 2153110, 4090909, 8181818, 20454545, 40909090]

約数ペア:

[(1, 40909090), (2, 20454545), (5, 8181818), (10, 4090909), (19, 2153110), (38, 1076555), (95, 430622), (139, 294310), (190, 215311), (278, 147155), (695, 58862), (1390, 29431), (1549, 26410), (2641, 15490), (3098, 13205), (5282, 7745)]