81520983

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{439}}^2$

素因数の和:931

約数の個数: 18

約数和(自身を含む): 120532464

約数和(自身を除く): 39011481

約数列:

[1, 3, 9, 47, 141, 423, 439, 1317, 3951, 20633, 61899, 185697, 192721, 578163, 1734489, 9057887, 27173661, 81520983]

約数ペア:

[(1, 81520983), (3, 27173661), (9, 9057887), (47, 1734489), (141, 578163), (423, 192721), (439, 185697), (1317, 61899), (3951, 20633)]