20699140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13441}}^1$

素因数の和:13468

約数の個数: 48

約数和(自身を含む): 54198144

約数和(自身を除く): 33499004

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, 13441, 26882, 53764, 67205, 94087, 134410, 147851, 188174, 268820, 295702, 376348, 470435, 591404, 739255, 940870, 1034957, 1478510, 1881740, 2069914, 2957020, 4139828, 5174785, 10349570, 20699140]

約数ペア:

[(1, 20699140), (2, 10349570), (4, 5174785), (5, 4139828), (7, 2957020), (10, 2069914), (11, 1881740), (14, 1478510), (20, 1034957), (22, 940870), (28, 739255), (35, 591404), (44, 470435), (55, 376348), (70, 295702), (77, 268820), (110, 188174), (140, 147851), (154, 134410), (220, 94087), (308, 67205), (385, 53764), (770, 26882), (1540, 13441)]