21502243

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{67}}^1\times {\mathrm{127}}^1$

素因数の和:239

約数の個数: 24

約数和(自身を含む): 26529792

約数和(自身を除く): 5027549

約数列:

[1, 7, 19, 67, 127, 133, 361, 469, 889, 1273, 2413, 2527, 8509, 8911, 16891, 24187, 45847, 59563, 161671, 169309, 320929, 1131697, 3071749, 21502243]

約数ペア:

[(1, 21502243), (7, 3071749), (19, 1131697), (67, 320929), (127, 169309), (133, 161671), (361, 59563), (469, 45847), (889, 24187), (1273, 16891), (2413, 8911), (2527, 8509)]