21029240

素因数分解:

$2^3\times 5^1\times {\mathrm{525731}}^1$

素因数の和:525742

約数の個数: 16

約数和(自身を含む): 47315880

約数和(自身を除く): 26286640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 525731, 1051462, 2102924, 2628655, 4205848, 5257310, 10514620, 21029240]

約数ペア:

[(1, 21029240), (2, 10514620), (4, 5257310), (5, 4205848), (8, 2628655), (10, 2102924), (20, 1051462), (40, 525731)]