257648636

素因数分解:

$2^2\times 7^1\times {\mathrm{1217}}^1\times {\mathrm{7561}}^1$

素因数の和:8789

約数の個数: 24

約数和(自身を含む): 515788896

約数和(自身を除く): 258140260

約数列:

[1, 2, 4, 7, 14, 28, 1217, 2434, 4868, 7561, 8519, 15122, 17038, 30244, 34076, 52927, 105854, 211708, 9201737, 18403474, 36806948, 64412159, 128824318, 257648636]

約数ペア:

[(1, 257648636), (2, 128824318), (4, 64412159), (7, 36806948), (14, 18403474), (28, 9201737), (1217, 211708), (2434, 105854), (4868, 52927), (7561, 34076), (8519, 30244), (15122, 17038)]