21187166

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{557}}^1$

素因数の和:609

約数の個数: 64

約数和(自身を含む): 44997120

約数和(自身を除く): 23809954

約数列:

[1, 2, 7, 11, 13, 14, 19, 22, 26, 38, 77, 91, 133, 143, 154, 182, 209, 247, 266, 286, 418, 494, 557, 1001, 1114, 1463, 1729, 2002, 2717, 2926, 3458, 3899, 5434, 6127, 7241, 7798, 10583, 12254, 14482, 19019, 21166, 38038, 42889, 50687, 74081, 79651, 85778, 101374, 116413, 137579, 148162, 159302, 232826, 275158, 557557, 814891, 963053, 1115114, 1513369, 1629782, 1926106, 3026738, 10593583, 21187166]

約数ペア:

[(1, 21187166), (2, 10593583), (7, 3026738), (11, 1926106), (13, 1629782), (14, 1513369), (19, 1115114), (22, 963053), (26, 814891), (38, 557557), (77, 275158), (91, 232826), (133, 159302), (143, 148162), (154, 137579), (182, 116413), (209, 101374), (247, 85778), (266, 79651), (286, 74081), (418, 50687), (494, 42889), (557, 38038), (1001, 21166), (1114, 19019), (1463, 14482), (1729, 12254), (2002, 10583), (2717, 7798), (2926, 7241), (3458, 6127), (3899, 5434)]