21657240

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1823}}^1$

素因数の和:1854

約数の個数: 128

約数和(自身を含む): 78796800

約数和(自身を除く): 57139560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 27, 30, 33, 36, 40, 44, 45, 54, 55, 60, 66, 72, 88, 90, 99, 108, 110, 120, 132, 135, 165, 180, 198, 216, 220, 264, 270, 297, 330, 360, 396, 440, 495, 540, 594, 660, 792, 990, 1080, 1188, 1320, 1485, 1823, 1980, 2376, 2970, 3646, 3960, 5469, 5940, 7292, 9115, 10938, 11880, 14584, 16407, 18230, 20053, 21876, 27345, 32814, 36460, 40106, 43752, 49221, 54690, 60159, 65628, 72920, 80212, 82035, 98442, 100265, 109380, 120318, 131256, 160424, 164070, 180477, 196884, 200530, 218760, 240636, 246105, 300795, 328140, 360954, 393768, 401060, 481272, 492210, 541431, 601590, 656280, 721908, 802120, 902385, 984420, 1082862, 1203180, 1443816, 1804770, 1968840, 2165724, 2406360, 2707155, 3609540, 4331448, 5414310, 7219080, 10828620, 21657240]

約数ペア:

[(1, 21657240), (2, 10828620), (3, 7219080), (4, 5414310), (5, 4331448), (6, 3609540), (8, 2707155), (9, 2406360), (10, 2165724), (11, 1968840), (12, 1804770), (15, 1443816), (18, 1203180), (20, 1082862), (22, 984420), (24, 902385), (27, 802120), (30, 721908), (33, 656280), (36, 601590), (40, 541431), (44, 492210), (45, 481272), (54, 401060), (55, 393768), (60, 360954), (66, 328140), (72, 300795), (88, 246105), (90, 240636), (99, 218760), (108, 200530), (110, 196884), (120, 180477), (132, 164070), (135, 160424), (165, 131256), (180, 120318), (198, 109380), (216, 100265), (220, 98442), (264, 82035), (270, 80212), (297, 72920), (330, 65628), (360, 60159), (396, 54690), (440, 49221), (495, 43752), (540, 40106), (594, 36460), (660, 32814), (792, 27345), (990, 21876), (1080, 20053), (1188, 18230), (1320, 16407), (1485, 14584), (1823, 11880), (1980, 10938), (2376, 9115), (2970, 7292), (3646, 5940), (3960, 5469)]