19997404

素因数分解:

$2^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{4549}}^1$

素因数の和:4717

約数の個数: 24

約数和(自身を含む): 40258400

約数和(自身を除く): 20260996

約数列:

[1, 2, 4, 7, 14, 28, 157, 314, 628, 1099, 2198, 4396, 4549, 9098, 18196, 31843, 63686, 127372, 714193, 1428386, 2856772, 4999351, 9998702, 19997404]

約数ペア:

[(1, 19997404), (2, 9998702), (4, 4999351), (7, 2856772), (14, 1428386), (28, 714193), (157, 127372), (314, 63686), (628, 31843), (1099, 18196), (2198, 9098), (4396, 4549)]