28231775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{149}}^1$

素因数の和:236

約数の個数: 48

約数和(自身を含む): 42184800

約数和(自身を除く): 13953025

約数列:

[1, 5, 11, 13, 25, 53, 55, 65, 143, 149, 265, 275, 325, 583, 689, 715, 745, 1325, 1639, 1937, 2915, 3445, 3575, 3725, 7579, 7897, 8195, 9685, 14575, 17225, 21307, 37895, 39485, 40975, 48425, 86867, 102661, 106535, 189475, 197425, 434335, 513305, 532675, 1129271, 2171675, 2566525, 5646355, 28231775]

約数ペア:

[(1, 28231775), (5, 5646355), (11, 2566525), (13, 2171675), (25, 1129271), (53, 532675), (55, 513305), (65, 434335), (143, 197425), (149, 189475), (265, 106535), (275, 102661), (325, 86867), (583, 48425), (689, 40975), (715, 39485), (745, 37895), (1325, 21307), (1639, 17225), (1937, 14575), (2915, 9685), (3445, 8195), (3575, 7897), (3725, 7579)]