21262640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{883}}^1$

素因数の和:946

約数の個数: 80

約数和(自身を含む): 57877248

約数和(自身を除く): 36614608

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 43, 56, 70, 80, 86, 112, 140, 172, 215, 280, 301, 344, 430, 560, 602, 688, 860, 883, 1204, 1505, 1720, 1766, 2408, 3010, 3440, 3532, 4415, 4816, 6020, 6181, 7064, 8830, 12040, 12362, 14128, 17660, 24080, 24724, 30905, 35320, 37969, 49448, 61810, 70640, 75938, 98896, 123620, 151876, 189845, 247240, 265783, 303752, 379690, 494480, 531566, 607504, 759380, 1063132, 1328915, 1518760, 2126264, 2657830, 3037520, 4252528, 5315660, 10631320, 21262640]

約数ペア:

[(1, 21262640), (2, 10631320), (4, 5315660), (5, 4252528), (7, 3037520), (8, 2657830), (10, 2126264), (14, 1518760), (16, 1328915), (20, 1063132), (28, 759380), (35, 607504), (40, 531566), (43, 494480), (56, 379690), (70, 303752), (80, 265783), (86, 247240), (112, 189845), (140, 151876), (172, 123620), (215, 98896), (280, 75938), (301, 70640), (344, 61810), (430, 49448), (560, 37969), (602, 35320), (688, 30905), (860, 24724), (883, 24080), (1204, 17660), (1505, 14128), (1720, 12362), (1766, 12040), (2408, 8830), (3010, 7064), (3440, 6181), (3532, 6020), (4415, 4816)]