81241340

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{439}}^1\times {\mathrm{487}}^1$

素因数の和:954

約数の個数: 48

約数和(自身を含む): 180364800

約数和(自身を除く): 99123460

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 439, 487, 878, 974, 1756, 1948, 2195, 2435, 4390, 4870, 8341, 8780, 9253, 9740, 16682, 18506, 33364, 37012, 41705, 46265, 83410, 92530, 166820, 185060, 213793, 427586, 855172, 1068965, 2137930, 4062067, 4275860, 8124134, 16248268, 20310335, 40620670, 81241340]

約数ペア:

[(1, 81241340), (2, 40620670), (4, 20310335), (5, 16248268), (10, 8124134), (19, 4275860), (20, 4062067), (38, 2137930), (76, 1068965), (95, 855172), (190, 427586), (380, 213793), (439, 185060), (487, 166820), (878, 92530), (974, 83410), (1756, 46265), (1948, 41705), (2195, 37012), (2435, 33364), (4390, 18506), (4870, 16682), (8341, 9740), (8780, 9253)]