28131243

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{11257}}^1$

素因数の和:11291

約数の個数: 24

約数和(自身を含む): 46202832

約数和(自身を除く): 18071589

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 357, 833, 2499, 11257, 33771, 78799, 191369, 236397, 551593, 574107, 1339583, 1654779, 4018749, 9377081, 28131243]

約数ペア:

[(1, 28131243), (3, 9377081), (7, 4018749), (17, 1654779), (21, 1339583), (49, 574107), (51, 551593), (119, 236397), (147, 191369), (357, 78799), (833, 33771), (2499, 11257)]