19009980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{9601}}^1$

素因数の和:9627

約数の個数: 72

約数和(自身を含む): 62912304

約数和(自身を除く): 43902324

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 9601, 19202, 28803, 38404, 48005, 57606, 86409, 96010, 105611, 115212, 144015, 172818, 192020, 211222, 288030, 316833, 345636, 422444, 432045, 528055, 576060, 633666, 864090, 950499, 1056110, 1267332, 1584165, 1728180, 1900998, 2112220, 3168330, 3801996, 4752495, 6336660, 9504990, 19009980]

約数ペア:

[(1, 19009980), (2, 9504990), (3, 6336660), (4, 4752495), (5, 3801996), (6, 3168330), (9, 2112220), (10, 1900998), (11, 1728180), (12, 1584165), (15, 1267332), (18, 1056110), (20, 950499), (22, 864090), (30, 633666), (33, 576060), (36, 528055), (44, 432045), (45, 422444), (55, 345636), (60, 316833), (66, 288030), (90, 211222), (99, 192020), (110, 172818), (132, 144015), (165, 115212), (180, 105611), (198, 96010), (220, 86409), (330, 57606), (396, 48005), (495, 38404), (660, 28803), (990, 19202), (1980, 9601)]