21652860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{509}}^1\times {\mathrm{709}}^1$

素因数の和:1230

約数の個数: 48

約数和(自身を含む): 60832800

約数和(自身を除く): 39179940

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 509, 709, 1018, 1418, 1527, 2036, 2127, 2545, 2836, 3054, 3545, 4254, 5090, 6108, 7090, 7635, 8508, 10180, 10635, 14180, 15270, 21270, 30540, 42540, 360881, 721762, 1082643, 1443524, 1804405, 2165286, 3608810, 4330572, 5413215, 7217620, 10826430, 21652860]

約数ペア:

[(1, 21652860), (2, 10826430), (3, 7217620), (4, 5413215), (5, 4330572), (6, 3608810), (10, 2165286), (12, 1804405), (15, 1443524), (20, 1082643), (30, 721762), (60, 360881), (509, 42540), (709, 30540), (1018, 21270), (1418, 15270), (1527, 14180), (2036, 10635), (2127, 10180), (2545, 8508), (2836, 7635), (3054, 7090), (3545, 6108), (4254, 5090)]