20780410

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{42409}}^1$

素因数の和:42430

約数の個数: 24

約数和(自身を含む): 43512660

約数和(自身を除く): 22732250

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 42409, 84818, 212045, 296863, 424090, 593726, 1484315, 2078041, 2968630, 4156082, 10390205, 20780410]

約数ペア:

[(1, 20780410), (2, 10390205), (5, 4156082), (7, 2968630), (10, 2078041), (14, 1484315), (35, 593726), (49, 424090), (70, 296863), (98, 212045), (245, 84818), (490, 42409)]