4025480

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{641}}^1$

素因数の和:809

約数の個数: 32

約数和(自身を含む): 9129240

約数和(自身を除く): 5103760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 641, 785, 1256, 1282, 1570, 2564, 3140, 3205, 5128, 6280, 6410, 12820, 25640, 100637, 201274, 402548, 503185, 805096, 1006370, 2012740, 4025480]

約数ペア:

[(1, 4025480), (2, 2012740), (4, 1006370), (5, 805096), (8, 503185), (10, 402548), (20, 201274), (40, 100637), (157, 25640), (314, 12820), (628, 6410), (641, 6280), (785, 5128), (1256, 3205), (1282, 3140), (1570, 2564)]