208179940

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{142589}}^1$

素因数の和:142671

約数の個数: 24

約数和(自身を含む): 443169720

約数和(自身を除く): 234989780

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 142589, 285178, 570356, 712945, 1425890, 2851780, 10408997, 20817994, 41635988, 52044985, 104089970, 208179940]

約数ペア:

[(1, 208179940), (2, 104089970), (4, 52044985), (5, 41635988), (10, 20817994), (20, 10408997), (73, 2851780), (146, 1425890), (292, 712945), (365, 570356), (730, 285178), (1460, 142589)]