21219720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{1823}}^1$

素因数の和:1934

約数の個数: 64

約数和(自身を含む): 64350720

約数和(自身を除く): 43131000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 97, 120, 194, 291, 388, 485, 582, 776, 970, 1164, 1455, 1823, 1940, 2328, 2910, 3646, 3880, 5469, 5820, 7292, 9115, 10938, 11640, 14584, 18230, 21876, 27345, 36460, 43752, 54690, 72920, 109380, 176831, 218760, 353662, 530493, 707324, 884155, 1060986, 1414648, 1768310, 2121972, 2652465, 3536620, 4243944, 5304930, 7073240, 10609860, 21219720]

約数ペア:

[(1, 21219720), (2, 10609860), (3, 7073240), (4, 5304930), (5, 4243944), (6, 3536620), (8, 2652465), (10, 2121972), (12, 1768310), (15, 1414648), (20, 1060986), (24, 884155), (30, 707324), (40, 530493), (60, 353662), (97, 218760), (120, 176831), (194, 109380), (291, 72920), (388, 54690), (485, 43752), (582, 36460), (776, 27345), (970, 21876), (1164, 18230), (1455, 14584), (1823, 11640), (1940, 10938), (2328, 9115), (2910, 7292), (3646, 5820), (3880, 5469)]