18238941

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{149}}^1$

素因数の和:258

約数の個数: 48

約数和(自身を含む): 31824000

約数和(自身を除く): 13585059

約数列:

[1, 3, 7, 9, 21, 29, 63, 67, 87, 149, 201, 203, 261, 447, 469, 603, 609, 1043, 1341, 1407, 1827, 1943, 3129, 4221, 4321, 5829, 9387, 9983, 12963, 13601, 17487, 29949, 30247, 38889, 40803, 69881, 89847, 90741, 122409, 209643, 272223, 289507, 628929, 868521, 2026549, 2605563, 6079647, 18238941]

約数ペア:

[(1, 18238941), (3, 6079647), (7, 2605563), (9, 2026549), (21, 868521), (29, 628929), (63, 289507), (67, 272223), (87, 209643), (149, 122409), (201, 90741), (203, 89847), (261, 69881), (447, 40803), (469, 38889), (603, 30247), (609, 29949), (1043, 17487), (1341, 13601), (1407, 12963), (1827, 9983), (1943, 9387), (3129, 5829), (4221, 4321)]