219871771

素因数分解:

$7^2\times {\mathrm{43}}^1\times {\mathrm{241}}^1\times {\mathrm{433}}^1$

素因数の和:731

約数の個数: 24

約数和(自身を含む): 263410224

約数和(自身を除く): 43538453

約数列:

[1, 7, 43, 49, 241, 301, 433, 1687, 2107, 3031, 10363, 11809, 18619, 21217, 72541, 104353, 130333, 507787, 730471, 912331, 4487179, 5113297, 31410253, 219871771]

約数ペア:

[(1, 219871771), (7, 31410253), (43, 5113297), (49, 4487179), (241, 912331), (301, 730471), (433, 507787), (1687, 130333), (2107, 104353), (3031, 72541), (10363, 21217), (11809, 18619)]