18988659

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{449}}^1$

素因数の和:619

約数の個数: 24

約数和(自身を含む): 28454400

約数和(自身を除く): 9465741

約数列:

[1, 3, 9, 37, 111, 127, 333, 381, 449, 1143, 1347, 4041, 4699, 14097, 16613, 42291, 49839, 57023, 149517, 171069, 513207, 2109851, 6329553, 18988659]

約数ペア:

[(1, 18988659), (3, 6329553), (9, 2109851), (37, 513207), (111, 171069), (127, 149517), (333, 57023), (381, 49839), (449, 42291), (1143, 16613), (1347, 14097), (4041, 4699)]