21725480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{77591}}^1$

素因数の和:77609

約数の個数: 32

約数和(自身を含む): 55866240

約数和(自身を除く): 34140760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 77591, 155182, 310364, 387955, 543137, 620728, 775910, 1086274, 1551820, 2172548, 2715685, 3103640, 4345096, 5431370, 10862740, 21725480]

約数ペア:

[(1, 21725480), (2, 10862740), (4, 5431370), (5, 4345096), (7, 3103640), (8, 2715685), (10, 2172548), (14, 1551820), (20, 1086274), (28, 775910), (35, 620728), (40, 543137), (56, 387955), (70, 310364), (140, 155182), (280, 77591)]