21064988

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{20333}}^1$

素因数の和:20381

約数の個数: 24

約数和(自身を含む): 43270752

約数和(自身を除く): 22205764

約数列:

[1, 2, 4, 7, 14, 28, 37, 74, 148, 259, 518, 1036, 20333, 40666, 81332, 142331, 284662, 569324, 752321, 1504642, 3009284, 5266247, 10532494, 21064988]

約数ペア:

[(1, 21064988), (2, 10532494), (4, 5266247), (7, 3009284), (14, 1504642), (28, 752321), (37, 569324), (74, 284662), (148, 142331), (259, 81332), (518, 40666), (1036, 20333)]