81705309

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{54799}}^1$

素因数の和:54880

約数の個数: 16

約数和(自身を含む): 126259200

約数和(自身を除く): 44553891

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 54799, 164397, 383593, 1150779, 3890729, 11672187, 27235103, 81705309]

約数ペア:

[(1, 81705309), (3, 27235103), (7, 11672187), (21, 3890729), (71, 1150779), (213, 383593), (497, 164397), (1491, 54799)]