21872686

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:181

約数の個数: 48

約数和(自身を含む): 39070080

約数和(自身を除く): 17197394

約数列:

[1, 2, 11, 19, 22, 38, 67, 71, 121, 134, 142, 209, 242, 418, 737, 781, 1273, 1349, 1474, 1562, 2299, 2546, 2698, 4598, 4757, 8107, 8591, 9514, 14003, 14839, 16214, 17182, 28006, 29678, 52327, 90383, 104654, 154033, 163229, 180766, 308066, 326458, 575597, 994213, 1151194, 1988426, 10936343, 21872686]

約数ペア:

[(1, 21872686), (2, 10936343), (11, 1988426), (19, 1151194), (22, 994213), (38, 575597), (67, 326458), (71, 308066), (121, 180766), (134, 163229), (142, 154033), (209, 104654), (242, 90383), (418, 52327), (737, 29678), (781, 28006), (1273, 17182), (1349, 16214), (1474, 14839), (1562, 14003), (2299, 9514), (2546, 8591), (2698, 8107), (4598, 4757)]