21505740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{358429}}^1$

素因数の和:358441

約数の個数: 24

約数和(自身を含む): 60216240

約数和(自身を除く): 38710500

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 358429, 716858, 1075287, 1433716, 1792145, 2150574, 3584290, 4301148, 5376435, 7168580, 10752870, 21505740]

約数ペア:

[(1, 21505740), (2, 10752870), (3, 7168580), (4, 5376435), (5, 4301148), (6, 3584290), (10, 2150574), (12, 1792145), (15, 1433716), (20, 1075287), (30, 716858), (60, 358429)]