21520030

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{10601}}^1$

素因数の和:10644

約数の個数: 32

約数和(自身を含む): 45800640

約数和(自身を除く): 24280610

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 58, 70, 145, 203, 290, 406, 1015, 2030, 10601, 21202, 53005, 74207, 106010, 148414, 307429, 371035, 614858, 742070, 1537145, 2152003, 3074290, 4304006, 10760015, 21520030]

約数ペア:

[(1, 21520030), (2, 10760015), (5, 4304006), (7, 3074290), (10, 2152003), (14, 1537145), (29, 742070), (35, 614858), (58, 371035), (70, 307429), (145, 148414), (203, 106010), (290, 74207), (406, 53005), (1015, 21202), (2030, 10601)]