257587568

素因数分解:

$2^4\times 7^1\times {\mathrm{113}}^1\times {\mathrm{20353}}^1$

素因数の和:20481

約数の個数: 40

約数和(自身を含む): 575448288

約数和(自身を除く): 317860720

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 113, 226, 452, 791, 904, 1582, 1808, 3164, 6328, 12656, 20353, 40706, 81412, 142471, 162824, 284942, 325648, 569884, 1139768, 2279536, 2299889, 4599778, 9199556, 16099223, 18399112, 32198446, 36798224, 64396892, 128793784, 257587568]

約数ペア:

[(1, 257587568), (2, 128793784), (4, 64396892), (7, 36798224), (8, 32198446), (14, 18399112), (16, 16099223), (28, 9199556), (56, 4599778), (112, 2299889), (113, 2279536), (226, 1139768), (452, 569884), (791, 325648), (904, 284942), (1582, 162824), (1808, 142471), (3164, 81412), (6328, 40706), (12656, 20353)]