87980985

素因数分解:

$3^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1993}}^1$

素因数の和:2119

約数の個数: 40

約数和(自身を含む): 159240840

約数和(自身を除く): 71259855

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 109, 135, 327, 405, 545, 981, 1635, 1993, 2943, 4905, 5979, 8829, 9965, 14715, 17937, 29895, 44145, 53811, 89685, 161433, 217237, 269055, 651711, 807165, 1086185, 1955133, 3258555, 5865399, 9775665, 17596197, 29326995, 87980985]

約数ペア:

[(1, 87980985), (3, 29326995), (5, 17596197), (9, 9775665), (15, 5865399), (27, 3258555), (45, 1955133), (81, 1086185), (109, 807165), (135, 651711), (327, 269055), (405, 217237), (545, 161433), (981, 89685), (1635, 53811), (1993, 44145), (2943, 29895), (4905, 17937), (5979, 14715), (8829, 9965)]