20685464

素因数分解:

$2^3\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{389}}^1$

素因数の和:452

約数の個数: 48

約数和(自身を含む): 43102800

約数和(自身を除く): 22417336

約数列:

[1, 2, 4, 8, 17, 23, 34, 46, 68, 92, 136, 184, 289, 389, 391, 578, 778, 782, 1156, 1556, 1564, 2312, 3112, 3128, 6613, 6647, 8947, 13226, 13294, 17894, 26452, 26588, 35788, 52904, 53176, 71576, 112421, 152099, 224842, 304198, 449684, 608396, 899368, 1216792, 2585683, 5171366, 10342732, 20685464]

約数ペア:

[(1, 20685464), (2, 10342732), (4, 5171366), (8, 2585683), (17, 1216792), (23, 899368), (34, 608396), (46, 449684), (68, 304198), (92, 224842), (136, 152099), (184, 112421), (289, 71576), (389, 53176), (391, 52904), (578, 35788), (778, 26588), (782, 26452), (1156, 17894), (1556, 13294), (1564, 13226), (2312, 8947), (3112, 6647), (3128, 6613)]