21293240

素因数分解:

$2^3\times 5^1\times {\mathrm{532331}}^1$

素因数の和:532342

約数の個数: 16

約数和(自身を含む): 47909880

約数和(自身を除く): 26616640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 532331, 1064662, 2129324, 2661655, 4258648, 5323310, 10646620, 21293240]

約数ペア:

[(1, 21293240), (2, 10646620), (4, 5323310), (5, 4258648), (8, 2661655), (10, 2129324), (20, 1064662), (40, 532331)]