20425790

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{647}}^1$

素因数の和:713

約数の個数: 64

約数和(自身を含む): 47029248

約数和(自身を除く): 26603458

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 41, 55, 70, 77, 82, 110, 154, 205, 287, 385, 410, 451, 574, 647, 770, 902, 1294, 1435, 2255, 2870, 3157, 3235, 4510, 4529, 6314, 6470, 7117, 9058, 14234, 15785, 22645, 26527, 31570, 35585, 45290, 49819, 53054, 71170, 99638, 132635, 185689, 249095, 265270, 291797, 371378, 498190, 583594, 928445, 1458985, 1856890, 2042579, 2917970, 4085158, 10212895, 20425790]

約数ペア:

[(1, 20425790), (2, 10212895), (5, 4085158), (7, 2917970), (10, 2042579), (11, 1856890), (14, 1458985), (22, 928445), (35, 583594), (41, 498190), (55, 371378), (70, 291797), (77, 265270), (82, 249095), (110, 185689), (154, 132635), (205, 99638), (287, 71170), (385, 53054), (410, 49819), (451, 45290), (574, 35585), (647, 31570), (770, 26527), (902, 22645), (1294, 15785), (1435, 14234), (2255, 9058), (2870, 7117), (3157, 6470), (3235, 6314), (4510, 4529)]