20808540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{115603}}^1$

素因数の和:115618

約数の個数: 36

約数和(自身を含む): 63119784

約数和(自身を除く): 42311244

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 115603, 231206, 346809, 462412, 578015, 693618, 1040427, 1156030, 1387236, 1734045, 2080854, 2312060, 3468090, 4161708, 5202135, 6936180, 10404270, 20808540]

約数ペア:

[(1, 20808540), (2, 10404270), (3, 6936180), (4, 5202135), (5, 4161708), (6, 3468090), (9, 2312060), (10, 2080854), (12, 1734045), (15, 1387236), (18, 1156030), (20, 1040427), (30, 693618), (36, 578015), (45, 462412), (60, 346809), (90, 231206), (180, 115603)]