40720220

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{18679}}^1$

素因数の和:18797

約数の個数: 24

約数和(自身を含む): 86301600

約数和(自身を除く): 45581380

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 18679, 37358, 74716, 93395, 186790, 373580, 2036011, 4072022, 8144044, 10180055, 20360110, 40720220]

約数ペア:

[(1, 40720220), (2, 20360110), (4, 10180055), (5, 8144044), (10, 4072022), (20, 2036011), (109, 373580), (218, 186790), (436, 93395), (545, 74716), (1090, 37358), (2180, 18679)]