9906820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{919}}^1$

素因数の和:953

約数の個数: 72

約数和(自身を含む): 26429760

約数和(自身を除く): 16522940

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 140, 154, 196, 220, 245, 308, 385, 490, 539, 770, 919, 980, 1078, 1540, 1838, 2156, 2695, 3676, 4595, 5390, 6433, 9190, 10109, 10780, 12866, 18380, 20218, 25732, 32165, 40436, 45031, 50545, 64330, 70763, 90062, 101090, 128660, 141526, 180124, 202180, 225155, 283052, 353815, 450310, 495341, 707630, 900620, 990682, 1415260, 1981364, 2476705, 4953410, 9906820]

約数ペア:

[(1, 9906820), (2, 4953410), (4, 2476705), (5, 1981364), (7, 1415260), (10, 990682), (11, 900620), (14, 707630), (20, 495341), (22, 450310), (28, 353815), (35, 283052), (44, 225155), (49, 202180), (55, 180124), (70, 141526), (77, 128660), (98, 101090), (110, 90062), (140, 70763), (154, 64330), (196, 50545), (220, 45031), (245, 40436), (308, 32165), (385, 25732), (490, 20218), (539, 18380), (770, 12866), (919, 10780), (980, 10109), (1078, 9190), (1540, 6433), (1838, 5390), (2156, 4595), (2695, 3676)]