257908

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{151}}^1$

素因数の和:223

約数の個数: 24

約数和(自身を含む): 527744

約数和(自身を除く): 269836

約数列:

[1, 2, 4, 7, 14, 28, 61, 122, 151, 244, 302, 427, 604, 854, 1057, 1708, 2114, 4228, 9211, 18422, 36844, 64477, 128954, 257908]

約数ペア:

[(1, 257908), (2, 128954), (4, 64477), (7, 36844), (14, 18422), (28, 9211), (61, 4228), (122, 2114), (151, 1708), (244, 1057), (302, 854), (427, 604)]