21780120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{181501}}^1$

素因数の和:181515

約数の個数: 32

約数和(自身を含む): 65340720

約数和(自身を除く): 43560600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 181501, 363002, 544503, 726004, 907505, 1089006, 1452008, 1815010, 2178012, 2722515, 3630020, 4356024, 5445030, 7260040, 10890060, 21780120]

約数ペア:

[(1, 21780120), (2, 10890060), (3, 7260040), (4, 5445030), (5, 4356024), (6, 3630020), (8, 2722515), (10, 2178012), (12, 1815010), (15, 1452008), (20, 1089006), (24, 907505), (30, 726004), (40, 544503), (60, 363002), (120, 181501)]