28161940

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{19289}}^1$

素因数の和:19371

約数の個数: 24

約数和(自身を含む): 59953320

約数和(自身を除く): 31791380

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 19289, 38578, 77156, 96445, 192890, 385780, 1408097, 2816194, 5632388, 7040485, 14080970, 28161940]

約数ペア:

[(1, 28161940), (2, 14080970), (4, 7040485), (5, 5632388), (10, 2816194), (20, 1408097), (73, 385780), (146, 192890), (292, 96445), (365, 77156), (730, 38578), (1460, 19289)]