15981964

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{223}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 31610880

約数和(自身を除く): 15628916

約数列:

[1, 2, 4, 19, 23, 38, 41, 46, 76, 82, 92, 164, 223, 437, 446, 779, 874, 892, 943, 1558, 1748, 1886, 3116, 3772, 4237, 5129, 8474, 9143, 10258, 16948, 17917, 18286, 20516, 35834, 36572, 71668, 97451, 173717, 194902, 210289, 347434, 389804, 420578, 694868, 841156, 3995491, 7990982, 15981964]

約数ペア:

[(1, 15981964), (2, 7990982), (4, 3995491), (19, 841156), (23, 694868), (38, 420578), (41, 389804), (46, 347434), (76, 210289), (82, 194902), (92, 173717), (164, 97451), (223, 71668), (437, 36572), (446, 35834), (779, 20516), (874, 18286), (892, 17917), (943, 16948), (1558, 10258), (1748, 9143), (1886, 8474), (3116, 5129), (3772, 4237)]