20456793

素因数分解:

$3^4\times 7^1\times {\mathrm{109}}^1\times {\mathrm{331}}^1$

素因数の和:459

約数の個数: 40

約数和(自身を含む): 35351360

約数和(自身を除く): 14894567

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 109, 189, 327, 331, 567, 763, 981, 993, 2289, 2317, 2943, 2979, 6867, 6951, 8829, 8937, 20601, 20853, 26811, 36079, 61803, 62559, 108237, 187677, 252553, 324711, 757659, 974133, 2272977, 2922399, 6818931, 20456793]

約数ペア:

[(1, 20456793), (3, 6818931), (7, 2922399), (9, 2272977), (21, 974133), (27, 757659), (63, 324711), (81, 252553), (109, 187677), (189, 108237), (327, 62559), (331, 61803), (567, 36079), (763, 26811), (981, 20853), (993, 20601), (2289, 8937), (2317, 8829), (2943, 6951), (2979, 6867)]