31397320

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{5647}}^1$

素因数の和:5797

約数の個数: 32

約数和(自身を含む): 71164800

約数和(自身を除く): 39767480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 5647, 11294, 22588, 28235, 45176, 56470, 112940, 225880, 784933, 1569866, 3139732, 3924665, 6279464, 7849330, 15698660, 31397320]

約数ペア:

[(1, 31397320), (2, 15698660), (4, 7849330), (5, 6279464), (8, 3924665), (10, 3139732), (20, 1569866), (40, 784933), (139, 225880), (278, 112940), (556, 56470), (695, 45176), (1112, 28235), (1390, 22588), (2780, 11294), (5560, 5647)]