251272

素因数分解:

$2^3\times 7^2\times {\mathrm{641}}^1$

素因数の和:661

約数の個数: 24

約数和(自身を含む): 548910

約数和(自身を除く): 297638

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 392, 641, 1282, 2564, 4487, 5128, 8974, 17948, 31409, 35896, 62818, 125636, 251272]

約数ペア:

[(1, 251272), (2, 125636), (4, 62818), (7, 35896), (8, 31409), (14, 17948), (28, 8974), (49, 5128), (56, 4487), (98, 2564), (196, 1282), (392, 641)]