20186940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{509}}^1\times {\mathrm{661}}^1$

素因数の和:1182

約数の個数: 48

約数和(自身を含む): 56720160

約数和(自身を除く): 36533220

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 509, 661, 1018, 1322, 1527, 1983, 2036, 2545, 2644, 3054, 3305, 3966, 5090, 6108, 6610, 7635, 7932, 9915, 10180, 13220, 15270, 19830, 30540, 39660, 336449, 672898, 1009347, 1345796, 1682245, 2018694, 3364490, 4037388, 5046735, 6728980, 10093470, 20186940]

約数ペア:

[(1, 20186940), (2, 10093470), (3, 6728980), (4, 5046735), (5, 4037388), (6, 3364490), (10, 2018694), (12, 1682245), (15, 1345796), (20, 1009347), (30, 672898), (60, 336449), (509, 39660), (661, 30540), (1018, 19830), (1322, 15270), (1527, 13220), (1983, 10180), (2036, 9915), (2545, 7932), (2644, 7635), (3054, 6610), (3305, 6108), (3966, 5090)]