21282740

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{34327}}^1$

素因数の和:34367

約数の個数: 24

約数和(自身を含む): 46136832

約数和(自身を除く): 24854092

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 34327, 68654, 137308, 171635, 343270, 686540, 1064137, 2128274, 4256548, 5320685, 10641370, 21282740]

約数ペア:

[(1, 21282740), (2, 10641370), (4, 5320685), (5, 4256548), (10, 2128274), (20, 1064137), (31, 686540), (62, 343270), (124, 171635), (155, 137308), (310, 68654), (620, 34327)]