21608840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{733}}^1$

素因数の和:822

約数の個数: 64

約数和(自身を含む): 53904960

約数和(自身を除く): 32296120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 67, 88, 110, 134, 220, 268, 335, 440, 536, 670, 733, 737, 1340, 1466, 1474, 2680, 2932, 2948, 3665, 3685, 5864, 5896, 7330, 7370, 8063, 14660, 14740, 16126, 29320, 29480, 32252, 40315, 49111, 64504, 80630, 98222, 161260, 196444, 245555, 322520, 392888, 491110, 540221, 982220, 1080442, 1964440, 2160884, 2701105, 4321768, 5402210, 10804420, 21608840]

約数ペア:

[(1, 21608840), (2, 10804420), (4, 5402210), (5, 4321768), (8, 2701105), (10, 2160884), (11, 1964440), (20, 1080442), (22, 982220), (40, 540221), (44, 491110), (55, 392888), (67, 322520), (88, 245555), (110, 196444), (134, 161260), (220, 98222), (268, 80630), (335, 64504), (440, 49111), (536, 40315), (670, 32252), (733, 29480), (737, 29320), (1340, 16126), (1466, 14740), (1474, 14660), (2680, 8063), (2932, 7370), (2948, 7330), (3665, 5896), (3685, 5864)]