21389490

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5527}}^1$

素因数の和:5583

約数の個数: 48

約数和(自身を含む): 56916288

約数和(自身を除く): 35526798

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 43, 45, 86, 90, 129, 215, 258, 387, 430, 645, 774, 1290, 1935, 3870, 5527, 11054, 16581, 27635, 33162, 49743, 55270, 82905, 99486, 165810, 237661, 248715, 475322, 497430, 712983, 1188305, 1425966, 2138949, 2376610, 3564915, 4277898, 7129830, 10694745, 21389490]

約数ペア:

[(1, 21389490), (2, 10694745), (3, 7129830), (5, 4277898), (6, 3564915), (9, 2376610), (10, 2138949), (15, 1425966), (18, 1188305), (30, 712983), (43, 497430), (45, 475322), (86, 248715), (90, 237661), (129, 165810), (215, 99486), (258, 82905), (387, 55270), (430, 49743), (645, 33162), (774, 27635), (1290, 16581), (1935, 11054), (3870, 5527)]