19971270

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{20173}}^1$

素因数の和:20197

約数の個数: 48

約数和(自身を含む): 56648592

約数和(自身を除く): 36677322

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990, 20173, 40346, 60519, 100865, 121038, 181557, 201730, 221903, 302595, 363114, 443806, 605190, 665709, 907785, 1109515, 1331418, 1815570, 1997127, 2219030, 3328545, 3994254, 6657090, 9985635, 19971270]

約数ペア:

[(1, 19971270), (2, 9985635), (3, 6657090), (5, 3994254), (6, 3328545), (9, 2219030), (10, 1997127), (11, 1815570), (15, 1331418), (18, 1109515), (22, 907785), (30, 665709), (33, 605190), (45, 443806), (55, 363114), (66, 302595), (90, 221903), (99, 201730), (110, 181557), (165, 121038), (198, 100865), (330, 60519), (495, 40346), (990, 20173)]