19404868

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{227}}^1$

素因数の和:352

約数の個数: 48

約数和(自身を含む): 40449024

約数和(自身を除く): 21044156

約数列:

[1, 2, 4, 7, 14, 28, 43, 71, 86, 142, 172, 227, 284, 301, 454, 497, 602, 908, 994, 1204, 1589, 1988, 3053, 3178, 6106, 6356, 9761, 12212, 16117, 19522, 21371, 32234, 39044, 42742, 64468, 68327, 85484, 112819, 136654, 225638, 273308, 451276, 693031, 1386062, 2772124, 4851217, 9702434, 19404868]

約数ペア:

[(1, 19404868), (2, 9702434), (4, 4851217), (7, 2772124), (14, 1386062), (28, 693031), (43, 451276), (71, 273308), (86, 225638), (142, 136654), (172, 112819), (227, 85484), (284, 68327), (301, 64468), (454, 42742), (497, 39044), (602, 32234), (908, 21371), (994, 19522), (1204, 16117), (1589, 12212), (1988, 9761), (3053, 6356), (3178, 6106)]