85781871

素因数分解:

$3^2\times 7^1\times {\mathrm{569}}^1\times {\mathrm{2393}}^1$

素因数の和:2975

約数の個数: 24

約数和(自身を含む): 141916320

約数和(自身を除く): 56134449

約数列:

[1, 3, 7, 9, 21, 63, 569, 1707, 2393, 3983, 5121, 7179, 11949, 16751, 21537, 35847, 50253, 150759, 1361617, 4084851, 9531319, 12254553, 28593957, 85781871]

約数ペア:

[(1, 85781871), (3, 28593957), (7, 12254553), (9, 9531319), (21, 4084851), (63, 1361617), (569, 150759), (1707, 50253), (2393, 35847), (3983, 21537), (5121, 16751), (7179, 11949)]