21217294

素因数分解:

$2^1\times 7^3\times {\mathrm{157}}^1\times {\mathrm{197}}^1$

素因数の和:377

約数の個数: 32

約数和(自身を含む): 37540800

約数和(自身を除く): 16323506

約数列:

[1, 2, 7, 14, 49, 98, 157, 197, 314, 343, 394, 686, 1099, 1379, 2198, 2758, 7693, 9653, 15386, 19306, 30929, 53851, 61858, 67571, 107702, 135142, 216503, 433006, 1515521, 3031042, 10608647, 21217294]

約数ペア:

[(1, 21217294), (2, 10608647), (7, 3031042), (14, 1515521), (49, 433006), (98, 216503), (157, 135142), (197, 107702), (314, 67571), (343, 61858), (394, 53851), (686, 30929), (1099, 19306), (1379, 15386), (2198, 9653), (2758, 7693)]