21798256

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{431}}^1$

素因数の和:577

約数の個数: 40

約数和(自身を含む): 44193600

約数和(自身を除く): 22395344

約数列:

[1, 2, 4, 8, 16, 29, 58, 109, 116, 218, 232, 431, 436, 464, 862, 872, 1724, 1744, 3161, 3448, 6322, 6896, 12499, 12644, 24998, 25288, 46979, 49996, 50576, 93958, 99992, 187916, 199984, 375832, 751664, 1362391, 2724782, 5449564, 10899128, 21798256]

約数ペア:

[(1, 21798256), (2, 10899128), (4, 5449564), (8, 2724782), (16, 1362391), (29, 751664), (58, 375832), (109, 199984), (116, 187916), (218, 99992), (232, 93958), (431, 50576), (436, 49996), (464, 46979), (862, 25288), (872, 24998), (1724, 12644), (1744, 12499), (3161, 6896), (3448, 6322)]