21138040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{6863}}^1$

素因数の和:6892

約数の個数: 64

約数和(自身を含む): 59304960

約数和(自身を除く): 38166920

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 6863, 13726, 27452, 34315, 48041, 54904, 68630, 75493, 96082, 137260, 150986, 192164, 240205, 274520, 301972, 377465, 384328, 480410, 528451, 603944, 754930, 960820, 1056902, 1509860, 1921640, 2113804, 2642255, 3019720, 4227608, 5284510, 10569020, 21138040]

約数ペア:

[(1, 21138040), (2, 10569020), (4, 5284510), (5, 4227608), (7, 3019720), (8, 2642255), (10, 2113804), (11, 1921640), (14, 1509860), (20, 1056902), (22, 960820), (28, 754930), (35, 603944), (40, 528451), (44, 480410), (55, 384328), (56, 377465), (70, 301972), (77, 274520), (88, 240205), (110, 192164), (140, 150986), (154, 137260), (220, 96082), (280, 75493), (308, 68630), (385, 54904), (440, 48041), (616, 34315), (770, 27452), (1540, 13726), (3080, 6863)]