18678737

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{199}}^1$

素因数の和:293

約数の個数: 32

約数和(自身を含む): 24883200

約数和(自身を除く): 6204463

約数列:

[1, 7, 11, 23, 53, 77, 161, 199, 253, 371, 583, 1219, 1393, 1771, 2189, 4081, 4577, 8533, 10547, 13409, 15323, 32039, 50347, 73829, 93863, 116017, 242581, 352429, 812119, 1698067, 2668391, 18678737]

約数ペア:

[(1, 18678737), (7, 2668391), (11, 1698067), (23, 812119), (53, 352429), (77, 242581), (161, 116017), (199, 93863), (253, 73829), (371, 50347), (583, 32039), (1219, 15323), (1393, 13409), (1771, 10547), (2189, 8533), (4081, 4577)]