139997900

素因数分解:

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

素因数の和:28599

約数の個数: 54

約数和(自身を含む): 353407068

約数和(自身を除く): 213409168

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 140, 175, 196, 245, 350, 490, 700, 980, 1225, 2450, 4900, 28571, 57142, 114284, 142855, 199997, 285710, 399994, 571420, 714275, 799988, 999985, 1399979, 1428550, 1999970, 2799958, 2857100, 3999940, 4999925, 5599916, 6999895, 9999850, 13999790, 19999700, 27999580, 34999475, 69998950, 139997900]

約数ペア:

[(1, 139997900), (2, 69998950), (4, 34999475), (5, 27999580), (7, 19999700), (10, 13999790), (14, 9999850), (20, 6999895), (25, 5599916), (28, 4999925), (35, 3999940), (49, 2857100), (50, 2799958), (70, 1999970), (98, 1428550), (100, 1399979), (140, 999985), (175, 799988), (196, 714275), (245, 571420), (350, 399994), (490, 285710), (700, 199997), (980, 142855), (1225, 114284), (2450, 57142), (4900, 28571)]