81947187

素因数分解:

$3^3\times 7^1\times {\mathrm{281}}^1\times {\mathrm{1543}}^1$

素因数の和:1840

約数の個数: 32

約数和(自身を含む): 139330560

約数和(自身を除く): 57383373

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 281, 843, 1543, 1967, 2529, 4629, 5901, 7587, 10801, 13887, 17703, 32403, 41661, 53109, 97209, 291627, 433583, 1300749, 3035081, 3902247, 9105243, 11706741, 27315729, 81947187]

約数ペア:

[(1, 81947187), (3, 27315729), (7, 11706741), (9, 9105243), (21, 3902247), (27, 3035081), (63, 1300749), (189, 433583), (281, 291627), (843, 97209), (1543, 53109), (1967, 41661), (2529, 32403), (4629, 17703), (5901, 13887), (7587, 10801)]