20928530

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{409}}^1$

素因数の和:483

約数の個数: 64

約数和(自身を含む): 46759680

約数和(自身を除く): 25831150

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 43, 70, 85, 86, 119, 170, 215, 238, 301, 409, 430, 595, 602, 731, 818, 1190, 1462, 1505, 2045, 2863, 3010, 3655, 4090, 5117, 5726, 6953, 7310, 10234, 13906, 14315, 17587, 25585, 28630, 34765, 35174, 48671, 51170, 69530, 87935, 97342, 123109, 175870, 243355, 246218, 298979, 486710, 597958, 615545, 1231090, 1494895, 2092853, 2989790, 4185706, 10464265, 20928530]

約数ペア:

[(1, 20928530), (2, 10464265), (5, 4185706), (7, 2989790), (10, 2092853), (14, 1494895), (17, 1231090), (34, 615545), (35, 597958), (43, 486710), (70, 298979), (85, 246218), (86, 243355), (119, 175870), (170, 123109), (215, 97342), (238, 87935), (301, 69530), (409, 51170), (430, 48671), (595, 35174), (602, 34765), (731, 28630), (818, 25585), (1190, 17587), (1462, 14315), (1505, 13906), (2045, 10234), (2863, 7310), (3010, 6953), (3655, 5726), (4090, 5117)]