19658870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^3\times {\mathrm{211}}^1$

素因数の和:258

約数の個数: 64

約数和(自身を含む): 44692992

約数和(自身を除く): 25034122

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 121, 154, 211, 242, 385, 422, 605, 770, 847, 1055, 1210, 1331, 1477, 1694, 2110, 2321, 2662, 2954, 4235, 4642, 6655, 7385, 8470, 9317, 11605, 13310, 14770, 16247, 18634, 23210, 25531, 32494, 46585, 51062, 81235, 93170, 127655, 162470, 178717, 255310, 280841, 357434, 561682, 893585, 1404205, 1787170, 1965887, 2808410, 3931774, 9829435, 19658870]

約数ペア:

[(1, 19658870), (2, 9829435), (5, 3931774), (7, 2808410), (10, 1965887), (11, 1787170), (14, 1404205), (22, 893585), (35, 561682), (55, 357434), (70, 280841), (77, 255310), (110, 178717), (121, 162470), (154, 127655), (211, 93170), (242, 81235), (385, 51062), (422, 46585), (605, 32494), (770, 25531), (847, 23210), (1055, 18634), (1210, 16247), (1331, 14770), (1477, 13310), (1694, 11605), (2110, 9317), (2321, 8470), (2662, 7385), (2954, 6655), (4235, 4642)]