81281278

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{1201}}^1$

素因数の和:1372

約数の個数: 32

約数和(自身を含む): 139335840

約数和(自身を除く): 58054562

約数列:

[1, 2, 13, 19, 26, 38, 137, 247, 274, 494, 1201, 1781, 2402, 2603, 3562, 5206, 15613, 22819, 31226, 33839, 45638, 67678, 164537, 296647, 329074, 593294, 2138981, 3126203, 4277962, 6252406, 40640639, 81281278]

約数ペア:

[(1, 81281278), (2, 40640639), (13, 6252406), (19, 4277962), (26, 3126203), (38, 2138981), (137, 593294), (247, 329074), (274, 296647), (494, 164537), (1201, 67678), (1781, 45638), (2402, 33839), (2603, 31226), (3562, 22819), (5206, 15613)]