1290219

素因数分解:

$3^1\times 7^2\times {\mathrm{67}}^1\times {\mathrm{131}}^1$

素因数の和:215

約数の個数: 24

約数和(自身を含む): 2046528

約数和(自身を除く): 756309

約数列:

[1, 3, 7, 21, 49, 67, 131, 147, 201, 393, 469, 917, 1407, 2751, 3283, 6419, 8777, 9849, 19257, 26331, 61439, 184317, 430073, 1290219]

約数ペア:

[(1, 1290219), (3, 430073), (7, 184317), (21, 61439), (49, 26331), (67, 19257), (131, 9849), (147, 8777), (201, 6419), (393, 3283), (469, 2751), (917, 1407)]