20973684

素因数分解:

$2^2\times 3^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1\times {\mathrm{239}}^1$

素因数の和:420

約数の個数: 48

約数和(自身を含む): 50319360

約数和(自身を除く): 29345676

約数列:

[1, 2, 3, 4, 6, 12, 71, 103, 142, 206, 213, 239, 284, 309, 412, 426, 478, 618, 717, 852, 956, 1236, 1434, 2868, 7313, 14626, 16969, 21939, 24617, 29252, 33938, 43878, 49234, 50907, 67876, 73851, 87756, 98468, 101814, 147702, 203628, 295404, 1747807, 3495614, 5243421, 6991228, 10486842, 20973684]

約数ペア:

[(1, 20973684), (2, 10486842), (3, 6991228), (4, 5243421), (6, 3495614), (12, 1747807), (71, 295404), (103, 203628), (142, 147702), (206, 101814), (213, 98468), (239, 87756), (284, 73851), (309, 67876), (412, 50907), (426, 49234), (478, 43878), (618, 33938), (717, 29252), (852, 24617), (956, 21939), (1236, 16969), (1434, 14626), (2868, 7313)]