20437515

素因数分解:

$3^8\times 5^1\times 7^1\times {\mathrm{89}}^1$

素因数の和:125

約数の個数: 72

約数和(自身を含む): 42513120

約数和(自身を除く): 22075605

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 89, 105, 135, 189, 243, 267, 315, 405, 445, 567, 623, 729, 801, 945, 1215, 1335, 1701, 1869, 2187, 2403, 2835, 3115, 3645, 4005, 5103, 5607, 6561, 7209, 8505, 9345, 10935, 12015, 15309, 16821, 21627, 25515, 28035, 32805, 36045, 45927, 50463, 64881, 76545, 84105, 108135, 151389, 194643, 229635, 252315, 324405, 454167, 583929, 756945, 973215, 1362501, 2270835, 2919645, 4087503, 6812505, 20437515]

約数ペア:

[(1, 20437515), (3, 6812505), (5, 4087503), (7, 2919645), (9, 2270835), (15, 1362501), (21, 973215), (27, 756945), (35, 583929), (45, 454167), (63, 324405), (81, 252315), (89, 229635), (105, 194643), (135, 151389), (189, 108135), (243, 84105), (267, 76545), (315, 64881), (405, 50463), (445, 45927), (567, 36045), (623, 32805), (729, 28035), (801, 25515), (945, 21627), (1215, 16821), (1335, 15309), (1701, 12015), (1869, 10935), (2187, 9345), (2403, 8505), (2835, 7209), (3115, 6561), (3645, 5607), (4005, 5103)]