20993726

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{157}}^1$

素因数の和:348

約数の個数: 32

約数和(自身を含む): 35303520

約数和(自身を除く): 14309794

約数列:

[1, 2, 13, 26, 37, 74, 139, 157, 278, 314, 481, 962, 1807, 2041, 3614, 4082, 5143, 5809, 10286, 11618, 21823, 43646, 66859, 75517, 133718, 151034, 283699, 567398, 807451, 1614902, 10496863, 20993726]

約数ペア:

[(1, 20993726), (2, 10496863), (13, 1614902), (26, 807451), (37, 567398), (74, 283699), (139, 151034), (157, 133718), (278, 75517), (314, 66859), (481, 43646), (962, 21823), (1807, 11618), (2041, 10286), (3614, 5809), (4082, 5143)]