21294820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{56039}}^1$

素因数の和:56067

約数の個数: 24

約数和(自身を含む): 47073600

約数和(自身を除く): 25778780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 56039, 112078, 224156, 280195, 560390, 1064741, 1120780, 2129482, 4258964, 5323705, 10647410, 21294820]

約数ペア:

[(1, 21294820), (2, 10647410), (4, 5323705), (5, 4258964), (10, 2129482), (19, 1120780), (20, 1064741), (38, 560390), (76, 280195), (95, 224156), (190, 112078), (380, 56039)]