18965984

素因数分解:

$2^5\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{353}}^1$

素因数の和:459

約数の個数: 48

約数和(自身を含む): 39608352

約数和(自身を除く): 20642368

約数列:

[1, 2, 4, 8, 16, 23, 32, 46, 73, 92, 146, 184, 292, 353, 368, 584, 706, 736, 1168, 1412, 1679, 2336, 2824, 3358, 5648, 6716, 8119, 11296, 13432, 16238, 25769, 26864, 32476, 51538, 53728, 64952, 103076, 129904, 206152, 259808, 412304, 592687, 824608, 1185374, 2370748, 4741496, 9482992, 18965984]

約数ペア:

[(1, 18965984), (2, 9482992), (4, 4741496), (8, 2370748), (16, 1185374), (23, 824608), (32, 592687), (46, 412304), (73, 259808), (92, 206152), (146, 129904), (184, 103076), (292, 64952), (353, 53728), (368, 51538), (584, 32476), (706, 26864), (736, 25769), (1168, 16238), (1412, 13432), (1679, 11296), (2336, 8119), (2824, 6716), (3358, 5648)]