18821495

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1$

素因数の和:156

約数の個数: 64

約数和(自身を含む): 30965760

約数和(自身を除く): 12144265

約数列:

[1, 5, 7, 11, 19, 31, 35, 55, 77, 83, 95, 133, 155, 209, 217, 341, 385, 415, 581, 589, 665, 913, 1045, 1085, 1463, 1577, 1705, 2387, 2573, 2905, 2945, 4123, 4565, 6391, 6479, 7315, 7885, 11039, 11935, 12865, 17347, 18011, 20615, 28303, 31955, 32395, 45353, 48887, 55195, 86735, 90055, 121429, 141515, 198121, 226765, 244435, 342209, 537757, 607145, 990605, 1711045, 2688785, 3764299, 18821495]

約数ペア:

[(1, 18821495), (5, 3764299), (7, 2688785), (11, 1711045), (19, 990605), (31, 607145), (35, 537757), (55, 342209), (77, 244435), (83, 226765), (95, 198121), (133, 141515), (155, 121429), (209, 90055), (217, 86735), (341, 55195), (385, 48887), (415, 45353), (581, 32395), (589, 31955), (665, 28303), (913, 20615), (1045, 18011), (1085, 17347), (1463, 12865), (1577, 11935), (1705, 11039), (2387, 7885), (2573, 7315), (2905, 6479), (2945, 6391), (4123, 4565)]