20125949205

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{421}}^1\times {\mathrm{187471}}^1$

素因数の和:187917

約数の個数: 32

約数和(自身を含む): 34176895488

約数和(自身を除く): 14050946283

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 421, 1263, 2105, 6315, 7157, 21471, 35785, 107355, 187471, 562413, 937355, 2812065, 3187007, 9561021, 15935035, 47805105, 78925291, 236775873, 394626455, 1183879365, 1341729947, 4025189841, 6708649735, 20125949205]

約数ペア:

[(1, 20125949205), (3, 6708649735), (5, 4025189841), (15, 1341729947), (17, 1183879365), (51, 394626455), (85, 236775873), (255, 78925291), (421, 47805105), (1263, 15935035), (2105, 9561021), (6315, 3187007), (7157, 2812065), (21471, 937355), (35785, 562413), (107355, 187471)]