81507584560

素因数分解:

$2^4\times 5^1\times {\mathrm{9343}}^1\times {\mathrm{109049}}^1$

素因数の和:118405

約数の個数: 40

約数和(自身を含む): 189527155200

約数和(自身を除く): 108019570640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 9343, 18686, 37372, 46715, 74744, 93430, 109049, 149488, 186860, 218098, 373720, 436196, 545245, 747440, 872392, 1090490, 1744784, 2180980, 4361960, 8723920, 1018844807, 2037689614, 4075379228, 5094224035, 8150758456, 10188448070, 16301516912, 20376896140, 40753792280, 81507584560]

約数ペア:

[(1, 81507584560), (2, 40753792280), (4, 20376896140), (5, 16301516912), (8, 10188448070), (10, 8150758456), (16, 5094224035), (20, 4075379228), (40, 2037689614), (80, 1018844807), (9343, 8723920), (18686, 4361960), (37372, 2180980), (46715, 1744784), (74744, 1090490), (93430, 872392), (109049, 747440), (149488, 545245), (186860, 436196), (218098, 373720)]