18580816

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{239}}^1$

素因数の和:403

約数の個数: 40

約数和(自身を含む): 37319040

約数和(自身を除く): 18738224

約数列:

[1, 2, 4, 8, 16, 43, 86, 113, 172, 226, 239, 344, 452, 478, 688, 904, 956, 1808, 1912, 3824, 4859, 9718, 10277, 19436, 20554, 27007, 38872, 41108, 54014, 77744, 82216, 108028, 164432, 216056, 432112, 1161301, 2322602, 4645204, 9290408, 18580816]

約数ペア:

[(1, 18580816), (2, 9290408), (4, 4645204), (8, 2322602), (16, 1161301), (43, 432112), (86, 216056), (113, 164432), (172, 108028), (226, 82216), (239, 77744), (344, 54014), (452, 41108), (478, 38872), (688, 27007), (904, 20554), (956, 19436), (1808, 10277), (1912, 9718), (3824, 4859)]