217778841

素因数分解:

$3^3\times 7^1\times {\mathrm{577}}^1\times {\mathrm{1997}}^1$

素因数の和:2590

約数の個数: 32

約数和(自身を含む): 369550080

約数和(自身を除く): 151771239

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 577, 1731, 1997, 4039, 5193, 5991, 12117, 13979, 15579, 17973, 36351, 41937, 53919, 109053, 125811, 377433, 1152269, 3456807, 8065883, 10370421, 24197649, 31111263, 72592947, 217778841]

約数ペア:

[(1, 217778841), (3, 72592947), (7, 31111263), (9, 24197649), (21, 10370421), (27, 8065883), (63, 3456807), (189, 1152269), (577, 377433), (1731, 125811), (1997, 109053), (4039, 53919), (5193, 41937), (5991, 36351), (12117, 17973), (13979, 15579)]