20885920

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{11867}}^1$

素因数の和:11893

約数の個数: 48

約数和(自身を含む): 53833248

約数和(自身を除く): 32947328

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 11867, 23734, 47468, 59335, 94936, 118670, 130537, 189872, 237340, 261074, 379744, 474680, 522148, 652685, 949360, 1044296, 1305370, 1898720, 2088592, 2610740, 4177184, 5221480, 10442960, 20885920]

約数ペア:

[(1, 20885920), (2, 10442960), (4, 5221480), (5, 4177184), (8, 2610740), (10, 2088592), (11, 1898720), (16, 1305370), (20, 1044296), (22, 949360), (32, 652685), (40, 522148), (44, 474680), (55, 379744), (80, 261074), (88, 237340), (110, 189872), (160, 130537), (176, 118670), (220, 94936), (352, 59335), (440, 47468), (880, 23734), (1760, 11867)]