390790420

素因数分解:

$2^2\times 5^1\times {\mathrm{769}}^1\times {\mathrm{25409}}^1$

素因数の和:26187

約数の個数: 24

約数和(自身を含む): 821759400

約数和(自身を除く): 430968980

約数列:

[1, 2, 4, 5, 10, 20, 769, 1538, 3076, 3845, 7690, 15380, 25409, 50818, 101636, 127045, 254090, 508180, 19539521, 39079042, 78158084, 97697605, 195395210, 390790420]

約数ペア:

[(1, 390790420), (2, 195395210), (4, 97697605), (5, 78158084), (10, 39079042), (20, 19539521), (769, 508180), (1538, 254090), (3076, 127045), (3845, 101636), (7690, 50818), (15380, 25409)]