19810890

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{20011}}^1$

素因数の和:20035

約数の個数: 48

約数和(自身を含む): 56193696

約数和(自身を除く): 36382806

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, 20011, 40022, 60033, 100055, 120066, 180099, 200110, 220121, 300165, 360198, 440242, 600330, 660363, 900495, 1100605, 1320726, 1800990, 1981089, 2201210, 3301815, 3962178, 6603630, 9905445, 19810890]

約数ペア:

[(1, 19810890), (2, 9905445), (3, 6603630), (5, 3962178), (6, 3301815), (9, 2201210), (10, 1981089), (11, 1800990), (15, 1320726), (18, 1100605), (22, 900495), (30, 660363), (33, 600330), (45, 440242), (55, 360198), (66, 300165), (90, 220121), (99, 200110), (110, 180099), (165, 120066), (198, 100055), (330, 60033), (495, 40022), (990, 20011)]