19787751

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{877}}^1$

素因数の和:1015

約数の個数: 24

約数和(自身を含む): 30132960

約数和(自身を除く): 10345209

約数列:

[1, 3, 9, 23, 69, 109, 207, 327, 877, 981, 2507, 2631, 7521, 7893, 20171, 22563, 60513, 95593, 181539, 286779, 860337, 2198639, 6595917, 19787751]

約数ペア:

[(1, 19787751), (3, 6595917), (9, 2198639), (23, 860337), (69, 286779), (109, 181539), (207, 95593), (327, 60513), (877, 22563), (981, 20171), (2507, 7893), (2631, 7521)]