28251385

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{181}}^1$

素因数の和:289

約数の個数: 32

約数和(自身を含む): 37739520

約数和(自身を除く): 9488135

約数列:

[1, 5, 19, 31, 53, 95, 155, 181, 265, 589, 905, 1007, 1643, 2945, 3439, 5035, 5611, 8215, 9593, 17195, 28055, 31217, 47965, 106609, 156085, 182267, 297383, 533045, 911335, 1486915, 5650277, 28251385]

約数ペア:

[(1, 28251385), (5, 5650277), (19, 1486915), (31, 911335), (53, 533045), (95, 297383), (155, 182267), (181, 156085), (265, 106609), (589, 47965), (905, 31217), (1007, 28055), (1643, 17195), (2945, 9593), (3439, 8215), (5035, 5611)]