81480718

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{389}}^1\times {\mathrm{9521}}^1$

素因数の和:9923

約数の個数: 16

約数和(自身を含む): 133688880

約数和(自身を除く): 52208162

約数列:

[1, 2, 11, 22, 389, 778, 4279, 8558, 9521, 19042, 104731, 209462, 3703669, 7407338, 40740359, 81480718]

約数ペア:

[(1, 81480718), (2, 40740359), (11, 7407338), (22, 3703669), (389, 209462), (778, 104731), (4279, 19042), (8558, 9521)]