21719390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{421}}^1$

素因数の和:513

約数の個数: 64

約数和(自身を含む): 49586688

約数和(自身を除く): 27867298

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 67, 70, 77, 110, 134, 154, 335, 385, 421, 469, 670, 737, 770, 842, 938, 1474, 2105, 2345, 2947, 3685, 4210, 4631, 4690, 5159, 5894, 7370, 9262, 10318, 14735, 23155, 25795, 28207, 29470, 32417, 46310, 51590, 56414, 64834, 141035, 162085, 197449, 282070, 310277, 324170, 394898, 620554, 987245, 1551385, 1974490, 2171939, 3102770, 4343878, 10859695, 21719390]

約数ペア:

[(1, 21719390), (2, 10859695), (5, 4343878), (7, 3102770), (10, 2171939), (11, 1974490), (14, 1551385), (22, 987245), (35, 620554), (55, 394898), (67, 324170), (70, 310277), (77, 282070), (110, 197449), (134, 162085), (154, 141035), (335, 64834), (385, 56414), (421, 51590), (469, 46310), (670, 32417), (737, 29470), (770, 28207), (842, 25795), (938, 23155), (1474, 14735), (2105, 10318), (2345, 9262), (2947, 7370), (3685, 5894), (4210, 5159), (4631, 4690)]