19945240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71233}}^1$

素因数の和:71251

約数の個数: 32

約数和(自身を含む): 51288480

約数和(自身を除く): 31343240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 71233, 142466, 284932, 356165, 498631, 569864, 712330, 997262, 1424660, 1994524, 2493155, 2849320, 3989048, 4986310, 9972620, 19945240]

約数ペア:

[(1, 19945240), (2, 9972620), (4, 4986310), (5, 3989048), (7, 2849320), (8, 2493155), (10, 1994524), (14, 1424660), (20, 997262), (28, 712330), (35, 569864), (40, 498631), (56, 356165), (70, 284932), (140, 142466), (280, 71233)]