18517527

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1$

素因数の和:228

約数の個数: 48

約数和(自身を含む): 32078592

約数和(自身を除く): 13561065

約数列:

[1, 3, 7, 9, 21, 41, 63, 67, 107, 123, 201, 287, 321, 369, 469, 603, 749, 861, 963, 1407, 2247, 2583, 2747, 4221, 4387, 6741, 7169, 8241, 13161, 19229, 21507, 24723, 30709, 39483, 50183, 57687, 64521, 92127, 150549, 173061, 276381, 293929, 451647, 881787, 2057503, 2645361, 6172509, 18517527]

約数ペア:

[(1, 18517527), (3, 6172509), (7, 2645361), (9, 2057503), (21, 881787), (41, 451647), (63, 293929), (67, 276381), (107, 173061), (123, 150549), (201, 92127), (287, 64521), (321, 57687), (369, 50183), (469, 39483), (603, 30709), (749, 24723), (861, 21507), (963, 19229), (1407, 13161), (2247, 8241), (2583, 7169), (2747, 6741), (4221, 4387)]