18069620

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^2\times {\mathrm{409}}^1$

素因数の和:512

約数の個数: 36

約数和(自身を含む): 38865540

約数和(自身を除く): 20795920

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 409, 470, 818, 940, 1636, 2045, 2209, 4090, 4418, 8180, 8836, 11045, 19223, 22090, 38446, 44180, 76892, 96115, 192230, 384460, 903481, 1806962, 3613924, 4517405, 9034810, 18069620]

約数ペア:

[(1, 18069620), (2, 9034810), (4, 4517405), (5, 3613924), (10, 1806962), (20, 903481), (47, 384460), (94, 192230), (188, 96115), (235, 76892), (409, 44180), (470, 38446), (818, 22090), (940, 19223), (1636, 11045), (2045, 8836), (2209, 8180), (4090, 4418)]