18511984

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{103}}^1\times {\mathrm{239}}^1$

素因数の和:397

約数の個数: 40

約数和(自身を含む): 37140480

約数和(自身を除く): 18628496

約数列:

[1, 2, 4, 8, 16, 47, 94, 103, 188, 206, 239, 376, 412, 478, 752, 824, 956, 1648, 1912, 3824, 4841, 9682, 11233, 19364, 22466, 24617, 38728, 44932, 49234, 77456, 89864, 98468, 179728, 196936, 393872, 1156999, 2313998, 4627996, 9255992, 18511984]

約数ペア:

[(1, 18511984), (2, 9255992), (4, 4627996), (8, 2313998), (16, 1156999), (47, 393872), (94, 196936), (103, 179728), (188, 98468), (206, 89864), (239, 77456), (376, 49234), (412, 44932), (478, 38728), (752, 24617), (824, 22466), (956, 19364), (1648, 11233), (1912, 9682), (3824, 4841)]