19910408

素因数分解:

$2^3\times 7^1\times {\mathrm{167}}^1\times {\mathrm{2129}}^1$

素因数の和:2309

約数の個数: 32

約数和(自身を含む): 42940800

約数和(自身を除く): 23030392

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 167, 334, 668, 1169, 1336, 2129, 2338, 4258, 4676, 8516, 9352, 14903, 17032, 29806, 59612, 119224, 355543, 711086, 1422172, 2488801, 2844344, 4977602, 9955204, 19910408]

約数ペア:

[(1, 19910408), (2, 9955204), (4, 4977602), (7, 2844344), (8, 2488801), (14, 1422172), (28, 711086), (56, 355543), (167, 119224), (334, 59612), (668, 29806), (1169, 17032), (1336, 14903), (2129, 9352), (2338, 8516), (4258, 4676)]