21124160

素因数分解:

$2^6\times 5^1\times {\mathrm{251}}^1\times {\mathrm{263}}^1$

素因数の和:531

約数の個数: 56

約数和(自身を含む): 50694336

約数和(自身を除く): 29570176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 251, 263, 320, 502, 526, 1004, 1052, 1255, 1315, 2008, 2104, 2510, 2630, 4016, 4208, 5020, 5260, 8032, 8416, 10040, 10520, 16064, 16832, 20080, 21040, 40160, 42080, 66013, 80320, 84160, 132026, 264052, 330065, 528104, 660130, 1056208, 1320260, 2112416, 2640520, 4224832, 5281040, 10562080, 21124160]

約数ペア:

[(1, 21124160), (2, 10562080), (4, 5281040), (5, 4224832), (8, 2640520), (10, 2112416), (16, 1320260), (20, 1056208), (32, 660130), (40, 528104), (64, 330065), (80, 264052), (160, 132026), (251, 84160), (263, 80320), (320, 66013), (502, 42080), (526, 40160), (1004, 21040), (1052, 20080), (1255, 16832), (1315, 16064), (2008, 10520), (2104, 10040), (2510, 8416), (2630, 8032), (4016, 5260), (4208, 5020)]