18936784

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{523}}^1$

素因数の和:635

約数の個数: 40

約数和(自身を含む): 38465792

約数和(自身を除く): 19529008

約数列:

[1, 2, 4, 8, 16, 31, 62, 73, 124, 146, 248, 292, 496, 523, 584, 1046, 1168, 2092, 2263, 4184, 4526, 8368, 9052, 16213, 18104, 32426, 36208, 38179, 64852, 76358, 129704, 152716, 259408, 305432, 610864, 1183549, 2367098, 4734196, 9468392, 18936784]

約数ペア:

[(1, 18936784), (2, 9468392), (4, 4734196), (8, 2367098), (16, 1183549), (31, 610864), (62, 305432), (73, 259408), (124, 152716), (146, 129704), (248, 76358), (292, 64852), (496, 38179), (523, 36208), (584, 32426), (1046, 18104), (1168, 16213), (2092, 9052), (2263, 8368), (4184, 4526)]