21510412

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^2\times {\mathrm{907}}^1$

素因数の和:947

約数の個数: 54

約数和(自身を含む): 48184836

約数和(自身を除く): 26674424

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 49, 77, 98, 121, 154, 196, 242, 308, 484, 539, 847, 907, 1078, 1694, 1814, 2156, 3388, 3628, 5929, 6349, 9977, 11858, 12698, 19954, 23716, 25396, 39908, 44443, 69839, 88886, 109747, 139678, 177772, 219494, 279356, 438988, 488873, 768229, 977746, 1536458, 1955492, 3072916, 5377603, 10755206, 21510412]

約数ペア:

[(1, 21510412), (2, 10755206), (4, 5377603), (7, 3072916), (11, 1955492), (14, 1536458), (22, 977746), (28, 768229), (44, 488873), (49, 438988), (77, 279356), (98, 219494), (121, 177772), (154, 139678), (196, 109747), (242, 88886), (308, 69839), (484, 44443), (539, 39908), (847, 25396), (907, 23716), (1078, 19954), (1694, 12698), (1814, 11858), (2156, 9977), (3388, 6349), (3628, 5929)]