39869980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{439}}^1$

素因数の和:706

約数の個数: 48

約数和(自身を含む): 88704000

約数和(自身を除く): 48834020

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 239, 380, 439, 478, 878, 956, 1195, 1756, 2195, 2390, 4390, 4541, 4780, 8341, 8780, 9082, 16682, 18164, 22705, 33364, 41705, 45410, 83410, 90820, 104921, 166820, 209842, 419684, 524605, 1049210, 1993499, 2098420, 3986998, 7973996, 9967495, 19934990, 39869980]

約数ペア:

[(1, 39869980), (2, 19934990), (4, 9967495), (5, 7973996), (10, 3986998), (19, 2098420), (20, 1993499), (38, 1049210), (76, 524605), (95, 419684), (190, 209842), (239, 166820), (380, 104921), (439, 90820), (478, 83410), (878, 45410), (956, 41705), (1195, 33364), (1756, 22705), (2195, 18164), (2390, 16682), (4390, 9082), (4541, 8780), (4780, 8341)]