21652264

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{251}}^1\times {\mathrm{263}}^1$

素因数の和:561

約数の個数: 32

約数和(自身を含む): 41912640

約数和(自身を除く): 20260376

約数列:

[1, 2, 4, 8, 41, 82, 164, 251, 263, 328, 502, 526, 1004, 1052, 2008, 2104, 10291, 10783, 20582, 21566, 41164, 43132, 66013, 82328, 86264, 132026, 264052, 528104, 2706533, 5413066, 10826132, 21652264]

約数ペア:

[(1, 21652264), (2, 10826132), (4, 5413066), (8, 2706533), (41, 528104), (82, 264052), (164, 132026), (251, 86264), (263, 82328), (328, 66013), (502, 43132), (526, 41164), (1004, 21566), (1052, 20582), (2008, 10783), (2104, 10291)]