21283520

素因数分解:

$2^6\times 5^1\times {\mathrm{227}}^1\times {\mathrm{293}}^1$

素因数の和:537

約数の個数: 56

約数和(自身を含む): 51078384

約数和(自身を除く): 29794864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 227, 293, 320, 454, 586, 908, 1135, 1172, 1465, 1816, 2270, 2344, 2930, 3632, 4540, 4688, 5860, 7264, 9080, 9376, 11720, 14528, 18160, 18752, 23440, 36320, 46880, 66511, 72640, 93760, 133022, 266044, 332555, 532088, 665110, 1064176, 1330220, 2128352, 2660440, 4256704, 5320880, 10641760, 21283520]

約数ペア:

[(1, 21283520), (2, 10641760), (4, 5320880), (5, 4256704), (8, 2660440), (10, 2128352), (16, 1330220), (20, 1064176), (32, 665110), (40, 532088), (64, 332555), (80, 266044), (160, 133022), (227, 93760), (293, 72640), (320, 66511), (454, 46880), (586, 36320), (908, 23440), (1135, 18752), (1172, 18160), (1465, 14528), (1816, 11720), (2270, 9376), (2344, 9080), (2930, 7264), (3632, 5860), (4540, 4688)]