18420885

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{193}}^1$

素因数の和:315

約数の個数: 64

約数和(自身を含む): 37992960

約数和(自身を除く): 19572075

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 101, 105, 135, 189, 193, 303, 315, 505, 579, 707, 909, 945, 965, 1351, 1515, 1737, 2121, 2727, 2895, 3535, 4053, 4545, 5211, 6363, 6755, 8685, 10605, 12159, 13635, 19089, 19493, 20265, 26055, 31815, 36477, 58479, 60795, 95445, 97465, 136451, 175437, 182385, 292395, 409353, 526311, 682255, 877185, 1228059, 2046765, 2631555, 3684177, 6140295, 18420885]

約数ペア:

[(1, 18420885), (3, 6140295), (5, 3684177), (7, 2631555), (9, 2046765), (15, 1228059), (21, 877185), (27, 682255), (35, 526311), (45, 409353), (63, 292395), (101, 182385), (105, 175437), (135, 136451), (189, 97465), (193, 95445), (303, 60795), (315, 58479), (505, 36477), (579, 31815), (707, 26055), (909, 20265), (945, 19493), (965, 19089), (1351, 13635), (1515, 12159), (1737, 10605), (2121, 8685), (2727, 6755), (2895, 6363), (3535, 5211), (4053, 4545)]