81645145

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{6529}}^1$

素因数の和:6636

約数の個数: 16

約数和(自身を含む): 102024720

約数和(自身を除く): 20379575

約数列:

[1, 5, 41, 61, 205, 305, 2501, 6529, 12505, 32645, 267689, 398269, 1338445, 1991345, 16329029, 81645145]

約数ペア:

[(1, 81645145), (5, 16329029), (41, 1991345), (61, 1338445), (205, 398269), (305, 267689), (2501, 32645), (6529, 12505)]