19929140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{12941}}^1$

素因数の和:12968

約数の個数: 48

約数和(自身を含む): 52182144

約数和(自身を除く): 32253004

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 12941, 25882, 51764, 64705, 90587, 129410, 142351, 181174, 258820, 284702, 362348, 452935, 569404, 711755, 905870, 996457, 1423510, 1811740, 1992914, 2847020, 3985828, 4982285, 9964570, 19929140]

約数ペア:

[(1, 19929140), (2, 9964570), (4, 4982285), (5, 3985828), (7, 2847020), (10, 1992914), (11, 1811740), (14, 1423510), (20, 996457), (22, 905870), (28, 711755), (35, 569404), (44, 452935), (55, 362348), (70, 284702), (77, 258820), (110, 181174), (140, 142351), (154, 129410), (220, 90587), (308, 64705), (385, 51764), (770, 25882), (1540, 12941)]