31221980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{53831}}^1$

素因数の和:53869

約数の個数: 24

約数和(自身を含む): 67828320

約数和(自身を除く): 36606340

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 53831, 107662, 215324, 269155, 538310, 1076620, 1561099, 3122198, 6244396, 7805495, 15610990, 31221980]

約数ペア:

[(1, 31221980), (2, 15610990), (4, 7805495), (5, 6244396), (10, 3122198), (20, 1561099), (29, 1076620), (58, 538310), (116, 269155), (145, 215324), (290, 107662), (580, 53831)]