20804520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{15761}}^1$

素因数の和:15786

約数の個数: 64

約数和(自身を含む): 68091840

約数和(自身を除く): 47287320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 110, 120, 132, 165, 220, 264, 330, 440, 660, 1320, 15761, 31522, 47283, 63044, 78805, 94566, 126088, 157610, 173371, 189132, 236415, 315220, 346742, 378264, 472830, 520113, 630440, 693484, 866855, 945660, 1040226, 1386968, 1733710, 1891320, 2080452, 2600565, 3467420, 4160904, 5201130, 6934840, 10402260, 20804520]

約数ペア:

[(1, 20804520), (2, 10402260), (3, 6934840), (4, 5201130), (5, 4160904), (6, 3467420), (8, 2600565), (10, 2080452), (11, 1891320), (12, 1733710), (15, 1386968), (20, 1040226), (22, 945660), (24, 866855), (30, 693484), (33, 630440), (40, 520113), (44, 472830), (55, 378264), (60, 346742), (66, 315220), (88, 236415), (110, 189132), (120, 173371), (132, 157610), (165, 126088), (220, 94566), (264, 78805), (330, 63044), (440, 47283), (660, 31522), (1320, 15761)]