21326580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10771}}^1$

素因数の和:10797

約数の個数: 72

約数和(自身を含む): 70578144

約数和(自身を除く): 49251564

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, 10771, 21542, 32313, 43084, 53855, 64626, 96939, 107710, 118481, 129252, 161565, 193878, 215420, 236962, 323130, 355443, 387756, 473924, 484695, 592405, 646260, 710886, 969390, 1066329, 1184810, 1421772, 1777215, 1938780, 2132658, 2369620, 3554430, 4265316, 5331645, 7108860, 10663290, 21326580]

約数ペア:

[(1, 21326580), (2, 10663290), (3, 7108860), (4, 5331645), (5, 4265316), (6, 3554430), (9, 2369620), (10, 2132658), (11, 1938780), (12, 1777215), (15, 1421772), (18, 1184810), (20, 1066329), (22, 969390), (30, 710886), (33, 646260), (36, 592405), (44, 484695), (45, 473924), (55, 387756), (60, 355443), (66, 323130), (90, 236962), (99, 215420), (110, 193878), (132, 161565), (165, 129252), (180, 118481), (198, 107710), (220, 96939), (330, 64626), (396, 53855), (495, 43084), (660, 32313), (990, 21542), (1980, 10771)]