21811768

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{3491}}^1$

素因数の和:3579

約数の個数: 32

約数和(自身を含む): 45256320

約数和(自身を除く): 23444552

約数列:

[1, 2, 4, 8, 11, 22, 44, 71, 88, 142, 284, 568, 781, 1562, 3124, 3491, 6248, 6982, 13964, 27928, 38401, 76802, 153604, 247861, 307208, 495722, 991444, 1982888, 2726471, 5452942, 10905884, 21811768]

約数ペア:

[(1, 21811768), (2, 10905884), (4, 5452942), (8, 2726471), (11, 1982888), (22, 991444), (44, 495722), (71, 307208), (88, 247861), (142, 153604), (284, 76802), (568, 38401), (781, 27928), (1562, 13964), (3124, 6982), (3491, 6248)]