21968870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{277}}^1$

素因数の和:405

約数の個数: 64

約数和(自身を含む): 49959936

約数和(自身を除く): 27991066

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 103, 110, 154, 206, 277, 385, 515, 554, 721, 770, 1030, 1133, 1385, 1442, 1939, 2266, 2770, 3047, 3605, 3878, 5665, 6094, 7210, 7931, 9695, 11330, 15235, 15862, 19390, 21329, 28531, 30470, 39655, 42658, 57062, 79310, 106645, 142655, 199717, 213290, 285310, 313841, 399434, 627682, 998585, 1569205, 1997170, 2196887, 3138410, 4393774, 10984435, 21968870]

約数ペア:

[(1, 21968870), (2, 10984435), (5, 4393774), (7, 3138410), (10, 2196887), (11, 1997170), (14, 1569205), (22, 998585), (35, 627682), (55, 399434), (70, 313841), (77, 285310), (103, 213290), (110, 199717), (154, 142655), (206, 106645), (277, 79310), (385, 57062), (515, 42658), (554, 39655), (721, 30470), (770, 28531), (1030, 21329), (1133, 19390), (1385, 15862), (1442, 15235), (1939, 11330), (2266, 9695), (2770, 7931), (3047, 7210), (3605, 6094), (3878, 5665)]