81621778

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{157571}}^1$

素因数の和:157617

約数の個数: 16

約数和(自身を含む): 143705664

約数和(自身を除く): 62083886

約数列:

[1, 2, 7, 14, 37, 74, 259, 518, 157571, 315142, 1102997, 2205994, 5830127, 11660254, 40810889, 81621778]

約数ペア:

[(1, 81621778), (2, 40810889), (7, 11660254), (14, 5830127), (37, 2205994), (74, 1102997), (259, 315142), (518, 157571)]