21274880

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1511}}^1$

素因数の和:1543

約数の個数: 72

約数和(自身を含む): 55629504

約数和(自身を除く): 34354624

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 256, 320, 352, 440, 640, 704, 880, 1280, 1408, 1511, 1760, 2816, 3022, 3520, 6044, 7040, 7555, 12088, 14080, 15110, 16621, 24176, 30220, 33242, 48352, 60440, 66484, 83105, 96704, 120880, 132968, 166210, 193408, 241760, 265936, 332420, 386816, 483520, 531872, 664840, 967040, 1063744, 1329680, 1934080, 2127488, 2659360, 4254976, 5318720, 10637440, 21274880]

約数ペア:

[(1, 21274880), (2, 10637440), (4, 5318720), (5, 4254976), (8, 2659360), (10, 2127488), (11, 1934080), (16, 1329680), (20, 1063744), (22, 967040), (32, 664840), (40, 531872), (44, 483520), (55, 386816), (64, 332420), (80, 265936), (88, 241760), (110, 193408), (128, 166210), (160, 132968), (176, 120880), (220, 96704), (256, 83105), (320, 66484), (352, 60440), (440, 48352), (640, 33242), (704, 30220), (880, 24176), (1280, 16621), (1408, 15110), (1511, 14080), (1760, 12088), (2816, 7555), (3022, 7040), (3520, 6044)]