20691658

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1\times {\mathrm{157}}^1$

素因数の和:346

約数の個数: 32

約数和(自身を含む): 34799184

約数和(自身を除く): 14107526

約数列:

[1, 2, 13, 26, 37, 74, 137, 157, 274, 314, 481, 962, 1781, 2041, 3562, 4082, 5069, 5809, 10138, 11618, 21509, 43018, 65897, 75517, 131794, 151034, 279617, 559234, 795833, 1591666, 10345829, 20691658]

約数ペア:

[(1, 20691658), (2, 10345829), (13, 1591666), (26, 795833), (37, 559234), (74, 279617), (137, 151034), (157, 131794), (274, 75517), (314, 65897), (481, 43018), (962, 21509), (1781, 11618), (2041, 10138), (3562, 5809), (4082, 5069)]