638852151

素因数分解:

$3^1\times 7^2\times {\mathrm{173}}^1\times {\mathrm{25121}}^1$

素因数の和:25311

約数の個数: 24

約数和(自身を含む): 996639984

約数和(自身を除く): 357787833

約数列:

[1, 3, 7, 21, 49, 147, 173, 519, 1211, 3633, 8477, 25121, 25431, 75363, 175847, 527541, 1230929, 3692787, 4345933, 13037799, 30421531, 91264593, 212950717, 638852151]

約数ペア:

[(1, 638852151), (3, 212950717), (7, 91264593), (21, 30421531), (49, 13037799), (147, 4345933), (173, 3692787), (519, 1230929), (1211, 527541), (3633, 175847), (8477, 75363), (25121, 25431)]