221286009

素因数分解:

$3^1\times 7^2\times {\mathrm{149}}^1\times {\mathrm{10103}}^1$

素因数の和:10269

約数の個数: 24

約数和(自身を含む): 345556800

約数和(自身を除く): 124270791

約数列:

[1, 3, 7, 21, 49, 147, 149, 447, 1043, 3129, 7301, 10103, 21903, 30309, 70721, 212163, 495047, 1485141, 1505347, 4516041, 10537429, 31612287, 73762003, 221286009]

約数ペア:

[(1, 221286009), (3, 73762003), (7, 31612287), (21, 10537429), (49, 4516041), (147, 1505347), (149, 1485141), (447, 495047), (1043, 212163), (3129, 70721), (7301, 30309), (10103, 21903)]