81723865

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{127}}^1$

素因数の和:289

約数の個数: 32

約数和(自身を含む): 105025536

約数和(自身を除く): 23301671

約数列:

[1, 5, 41, 43, 73, 127, 205, 215, 365, 635, 1763, 2993, 3139, 5207, 5461, 8815, 9271, 14965, 15695, 26035, 27305, 46355, 128699, 223901, 380111, 398653, 643495, 1119505, 1900555, 1993265, 16344773, 81723865]

約数ペア:

[(1, 81723865), (5, 16344773), (41, 1993265), (43, 1900555), (73, 1119505), (127, 643495), (205, 398653), (215, 380111), (365, 223901), (635, 128699), (1763, 46355), (2993, 27305), (3139, 26035), (5207, 15695), (5461, 14965), (8815, 9271)]