217876905

素因数分解:

$3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{823}}^1$

素因数の和:927

約数の個数: 64

約数和(自身を含む): 405803520

約数和(自身を除く): 187926615

約数列:

[1, 3, 5, 9, 15, 27, 37, 45, 53, 111, 135, 159, 185, 265, 333, 477, 555, 795, 823, 999, 1431, 1665, 1961, 2385, 2469, 4115, 4995, 5883, 7155, 7407, 9805, 12345, 17649, 22221, 29415, 30451, 37035, 43619, 52947, 88245, 91353, 111105, 130857, 152255, 218095, 264735, 274059, 392571, 456765, 654285, 822177, 1177713, 1370295, 1613903, 1962855, 4110885, 4841709, 5888565, 8069515, 14525127, 24208545, 43575381, 72625635, 217876905]

約数ペア:

[(1, 217876905), (3, 72625635), (5, 43575381), (9, 24208545), (15, 14525127), (27, 8069515), (37, 5888565), (45, 4841709), (53, 4110885), (111, 1962855), (135, 1613903), (159, 1370295), (185, 1177713), (265, 822177), (333, 654285), (477, 456765), (555, 392571), (795, 274059), (823, 264735), (999, 218095), (1431, 152255), (1665, 130857), (1961, 111105), (2385, 91353), (2469, 88245), (4115, 52947), (4995, 43619), (5883, 37035), (7155, 30451), (7407, 29415), (9805, 22221), (12345, 17649)]