256838975

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{9907}}^1$

素因数の和:9995

約数の個数: 24

約数和(自身を含む): 342777168

約数和(自身を除く): 85938193

約数列:

[1, 5, 17, 25, 61, 85, 305, 425, 1037, 1525, 5185, 9907, 25925, 49535, 168419, 247675, 604327, 842095, 3021635, 4210475, 10273559, 15108175, 51367795, 256838975]

約数ペア:

[(1, 256838975), (5, 51367795), (17, 15108175), (25, 10273559), (61, 4210475), (85, 3021635), (305, 842095), (425, 604327), (1037, 247675), (1525, 168419), (5185, 49535), (9907, 25925)]