19908900

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{2011}}^1$

素因数の和:2042

約数の個数: 108

約数和(自身を含む): 68110224

約数和(自身を除く): 48201324

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 25, 30, 33, 36, 44, 45, 50, 55, 60, 66, 75, 90, 99, 100, 110, 132, 150, 165, 180, 198, 220, 225, 275, 300, 330, 396, 450, 495, 550, 660, 825, 900, 990, 1100, 1650, 1980, 2011, 2475, 3300, 4022, 4950, 6033, 8044, 9900, 10055, 12066, 18099, 20110, 22121, 24132, 30165, 36198, 40220, 44242, 50275, 60330, 66363, 72396, 88484, 90495, 100550, 110605, 120660, 132726, 150825, 180990, 199089, 201100, 221210, 265452, 301650, 331815, 361980, 398178, 442420, 452475, 553025, 603300, 663630, 796356, 904950, 995445, 1106050, 1327260, 1659075, 1809900, 1990890, 2212100, 3318150, 3981780, 4977225, 6636300, 9954450, 19908900]

約数ペア:

[(1, 19908900), (2, 9954450), (3, 6636300), (4, 4977225), (5, 3981780), (6, 3318150), (9, 2212100), (10, 1990890), (11, 1809900), (12, 1659075), (15, 1327260), (18, 1106050), (20, 995445), (22, 904950), (25, 796356), (30, 663630), (33, 603300), (36, 553025), (44, 452475), (45, 442420), (50, 398178), (55, 361980), (60, 331815), (66, 301650), (75, 265452), (90, 221210), (99, 201100), (100, 199089), (110, 180990), (132, 150825), (150, 132726), (165, 120660), (180, 110605), (198, 100550), (220, 90495), (225, 88484), (275, 72396), (300, 66363), (330, 60330), (396, 50275), (450, 44242), (495, 40220), (550, 36198), (660, 30165), (825, 24132), (900, 22121), (990, 20110), (1100, 18099), (1650, 12066), (1980, 10055), (2011, 9900), (2475, 8044), (3300, 6033), (4022, 4950)]