81218145

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{2399}}^1$

素因数の和:2505

約数の個数: 32

約数和(自身を含む): 135705600

約数和(自身を除く): 54487455

約数列:

[1, 3, 5, 15, 37, 61, 111, 183, 185, 305, 555, 915, 2257, 2399, 6771, 7197, 11285, 11995, 33855, 35985, 88763, 146339, 266289, 439017, 443815, 731695, 1331445, 2195085, 5414543, 16243629, 27072715, 81218145]

約数ペア:

[(1, 81218145), (3, 27072715), (5, 16243629), (15, 5414543), (37, 2195085), (61, 1331445), (111, 731695), (183, 443815), (185, 439017), (305, 266289), (555, 146339), (915, 88763), (2257, 35985), (2399, 33855), (6771, 11995), (7197, 11285)]