20018388

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{9871}}^1$

素因数の和:9904

約数の個数: 36

約数和(自身を含む): 50584128

約数和(自身を除く): 30565740

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 169, 338, 507, 676, 1014, 2028, 9871, 19742, 29613, 39484, 59226, 118452, 128323, 256646, 384969, 513292, 769938, 1539876, 1668199, 3336398, 5004597, 6672796, 10009194, 20018388]

約数ペア:

[(1, 20018388), (2, 10009194), (3, 6672796), (4, 5004597), (6, 3336398), (12, 1668199), (13, 1539876), (26, 769938), (39, 513292), (52, 384969), (78, 256646), (156, 128323), (169, 118452), (338, 59226), (507, 39484), (676, 29613), (1014, 19742), (2028, 9871)]