81281845

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{283}}^1$

素因数の和:445

約数の個数: 32

約数和(自身を含む): 107965440

約数和(自身を除く): 26683595

約数列:

[1, 5, 17, 31, 85, 109, 155, 283, 527, 545, 1415, 1853, 2635, 3379, 4811, 8773, 9265, 16895, 24055, 30847, 43865, 57443, 149141, 154235, 287215, 524399, 745705, 956257, 2621995, 4781285, 16256369, 81281845]

約数ペア:

[(1, 81281845), (5, 16256369), (17, 4781285), (31, 2621995), (85, 956257), (109, 745705), (155, 524399), (283, 287215), (527, 154235), (545, 149141), (1415, 57443), (1853, 43865), (2635, 30847), (3379, 24055), (4811, 16895), (8773, 9265)]