20057240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71633}}^1$

素因数の和:71651

約数の個数: 32

約数和(自身を含む): 51576480

約数和(自身を除く): 31519240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 71633, 143266, 286532, 358165, 501431, 573064, 716330, 1002862, 1432660, 2005724, 2507155, 2865320, 4011448, 5014310, 10028620, 20057240]

約数ペア:

[(1, 20057240), (2, 10028620), (4, 5014310), (5, 4011448), (7, 2865320), (8, 2507155), (10, 2005724), (14, 1432660), (20, 1002862), (28, 716330), (35, 573064), (40, 501431), (56, 358165), (70, 286532), (140, 143266), (280, 71633)]