20796405

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1$

素因数の和:206

約数の個数: 64

約数和(自身を含む): 40186368

約数和(自身を除く): 19389963

約数列:

[1, 3, 5, 7, 15, 21, 35, 37, 53, 101, 105, 111, 159, 185, 259, 265, 303, 371, 505, 555, 707, 777, 795, 1113, 1295, 1515, 1855, 1961, 2121, 3535, 3737, 3885, 5353, 5565, 5883, 9805, 10605, 11211, 13727, 16059, 18685, 26159, 26765, 29415, 37471, 41181, 56055, 68635, 78477, 80295, 112413, 130795, 187355, 198061, 205905, 392385, 562065, 594183, 990305, 1386427, 2970915, 4159281, 6932135, 20796405]

約数ペア:

[(1, 20796405), (3, 6932135), (5, 4159281), (7, 2970915), (15, 1386427), (21, 990305), (35, 594183), (37, 562065), (53, 392385), (101, 205905), (105, 198061), (111, 187355), (159, 130795), (185, 112413), (259, 80295), (265, 78477), (303, 68635), (371, 56055), (505, 41181), (555, 37471), (707, 29415), (777, 26765), (795, 26159), (1113, 18685), (1295, 16059), (1515, 13727), (1855, 11211), (1961, 10605), (2121, 9805), (3535, 5883), (3737, 5565), (3885, 5353)]