19999700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{28571}}^1$

素因数の和:28592

約数の個数: 36

約数和(自身を含む): 49600992

約数和(自身を除く): 29601292

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, 350, 700, 28571, 57142, 114284, 142855, 199997, 285710, 399994, 571420, 714275, 799988, 999985, 1428550, 1999970, 2857100, 3999940, 4999925, 9999850, 19999700]

約数ペア:

[(1, 19999700), (2, 9999850), (4, 4999925), (5, 3999940), (7, 2857100), (10, 1999970), (14, 1428550), (20, 999985), (25, 799988), (28, 714275), (35, 571420), (50, 399994), (70, 285710), (100, 199997), (140, 142855), (175, 114284), (350, 57142), (700, 28571)]