21641540

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37313}}^1$

素因数の和:37351

約数の個数: 24

約数和(自身を含む): 47015640

約数和(自身を除く): 25374100

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 37313, 74626, 149252, 186565, 373130, 746260, 1082077, 2164154, 4328308, 5410385, 10820770, 21641540]

約数ペア:

[(1, 21641540), (2, 10820770), (4, 5410385), (5, 4328308), (10, 2164154), (20, 1082077), (29, 746260), (58, 373130), (116, 186565), (145, 149252), (290, 74626), (580, 37313)]