21120880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{24001}}^1$

素因数の和:24025

約数の個数: 40

約数和(自身を含む): 53572464

約数和(自身を除く): 32451584

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 24001, 48002, 96004, 120005, 192008, 240010, 264011, 384016, 480020, 528022, 960040, 1056044, 1320055, 1920080, 2112088, 2640110, 4224176, 5280220, 10560440, 21120880]

約数ペア:

[(1, 21120880), (2, 10560440), (4, 5280220), (5, 4224176), (8, 2640110), (10, 2112088), (11, 1920080), (16, 1320055), (20, 1056044), (22, 960040), (40, 528022), (44, 480020), (55, 384016), (80, 264011), (88, 240010), (110, 192008), (176, 120005), (220, 96004), (440, 48002), (880, 24001)]