21775184

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{9791}}^1$

素因数の和:9938

約数の個数: 20

約数和(自身を含む): 42497280

約数和(自身を除く): 20722096

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 9791, 19582, 39164, 78328, 156656, 1360949, 2721898, 5443796, 10887592, 21775184]

約数ペア:

[(1, 21775184), (2, 10887592), (4, 5443796), (8, 2721898), (16, 1360949), (139, 156656), (278, 78328), (556, 39164), (1112, 19582), (2224, 9791)]