21152888

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{167}}^1\times {\mathrm{223}}^1$

素因数の和:467

約数の個数: 32

約数和(自身を含む): 40642560

約数和(自身を除く): 19489672

約数列:

[1, 2, 4, 8, 71, 142, 167, 223, 284, 334, 446, 568, 668, 892, 1336, 1784, 11857, 15833, 23714, 31666, 37241, 47428, 63332, 74482, 94856, 126664, 148964, 297928, 2644111, 5288222, 10576444, 21152888]

約数ペア:

[(1, 21152888), (2, 10576444), (4, 5288222), (8, 2644111), (71, 297928), (142, 148964), (167, 126664), (223, 94856), (284, 74482), (334, 63332), (446, 47428), (568, 37241), (668, 31666), (892, 23714), (1336, 15833), (1784, 11857)]