257131690

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{311}}^1\times {\mathrm{2851}}^1$

素因数の和:3198

約数の個数: 32

約数和(自身を含む): 480504960

約数和(自身を除く): 223373270

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 311, 622, 1555, 2851, 3110, 5702, 9019, 14255, 18038, 28510, 45095, 82679, 90190, 165358, 413395, 826790, 886661, 1773322, 4433305, 8866610, 25713169, 51426338, 128565845, 257131690]

約数ペア:

[(1, 257131690), (2, 128565845), (5, 51426338), (10, 25713169), (29, 8866610), (58, 4433305), (145, 1773322), (290, 886661), (311, 826790), (622, 413395), (1555, 165358), (2851, 90190), (3110, 82679), (5702, 45095), (9019, 28510), (14255, 18038)]