207710020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{211949}}^1$

素因数の和:211972

約数の個数: 36

約数和(自身を含む): 507408300

約数和(自身を除く): 299698280

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 211949, 423898, 847796, 1059745, 1483643, 2119490, 2967286, 4238980, 5934572, 7418215, 10385501, 14836430, 20771002, 29672860, 41542004, 51927505, 103855010, 207710020]

約数ペア:

[(1, 207710020), (2, 103855010), (4, 51927505), (5, 41542004), (7, 29672860), (10, 20771002), (14, 14836430), (20, 10385501), (28, 7418215), (35, 5934572), (49, 4238980), (70, 2967286), (98, 2119490), (140, 1483643), (196, 1059745), (245, 847796), (490, 423898), (980, 211949)]