21893480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{78191}}^1$

素因数の和:78209

約数の個数: 32

約数和(自身を含む): 56298240

約数和(自身を除く): 34404760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 78191, 156382, 312764, 390955, 547337, 625528, 781910, 1094674, 1563820, 2189348, 2736685, 3127640, 4378696, 5473370, 10946740, 21893480]

約数ペア:

[(1, 21893480), (2, 10946740), (4, 5473370), (5, 4378696), (7, 3127640), (8, 2736685), (10, 2189348), (14, 1563820), (20, 1094674), (28, 781910), (35, 625528), (40, 547337), (56, 390955), (70, 312764), (140, 156382), (280, 78191)]