21406808

素因数分解:

$2^3\times {\mathrm{17}}^2\times {\mathrm{47}}^1\times {\mathrm{197}}^1$

素因数の和:284

約数の個数: 48

約数和(自身を含む): 43765920

約数和(自身を除く): 22359112

約数列:

[1, 2, 4, 8, 17, 34, 47, 68, 94, 136, 188, 197, 289, 376, 394, 578, 788, 799, 1156, 1576, 1598, 2312, 3196, 3349, 6392, 6698, 9259, 13396, 13583, 18518, 26792, 27166, 37036, 54332, 56933, 74072, 108664, 113866, 157403, 227732, 314806, 455464, 629612, 1259224, 2675851, 5351702, 10703404, 21406808]

約数ペア:

[(1, 21406808), (2, 10703404), (4, 5351702), (8, 2675851), (17, 1259224), (34, 629612), (47, 455464), (68, 314806), (94, 227732), (136, 157403), (188, 113866), (197, 108664), (289, 74072), (376, 56933), (394, 54332), (578, 37036), (788, 27166), (799, 26792), (1156, 18518), (1576, 13583), (1598, 13396), (2312, 9259), (3196, 6698), (3349, 6392)]