18628821

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{313}}^1\times {\mathrm{389}}^1$

素因数の和:725

約数の個数: 24

約数和(自身を含む): 28655640

約数和(自身を除く): 10026819

約数列:

[1, 3, 9, 17, 51, 153, 313, 389, 939, 1167, 2817, 3501, 5321, 6613, 15963, 19839, 47889, 59517, 121757, 365271, 1095813, 2069869, 6209607, 18628821]

約数ペア:

[(1, 18628821), (3, 6209607), (9, 2069869), (17, 1095813), (51, 365271), (153, 121757), (313, 59517), (389, 47889), (939, 19839), (1167, 15963), (2817, 6613), (3501, 5321)]