256810015

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{5903}}^1$

素因数の和:6039

約数の個数: 32

約数和(自身を含む): 387680256

約数和(自身を除く): 130870241

約数列:

[1, 5, 7, 11, 35, 55, 77, 113, 385, 565, 791, 1243, 3955, 5903, 6215, 8701, 29515, 41321, 43505, 64933, 206605, 324665, 454531, 667039, 2272655, 3335195, 4669273, 7337429, 23346365, 36687145, 51362003, 256810015]

約数ペア:

[(1, 256810015), (5, 51362003), (7, 36687145), (11, 23346365), (35, 7337429), (55, 4669273), (77, 3335195), (113, 2272655), (385, 667039), (565, 454531), (791, 324665), (1243, 206605), (3955, 64933), (5903, 43505), (6215, 41321), (8701, 29515)]