81387513

素因数分解:

$3^2\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{1901}}^1$

素因数の和:2045

約数の個数: 24

約数和(自身を含む): 121058496

約数和(自身を除く): 39670983

約数列:

[1, 3, 9, 67, 71, 201, 213, 603, 639, 1901, 4757, 5703, 14271, 17109, 42813, 127367, 134971, 382101, 404913, 1146303, 1214739, 9043057, 27129171, 81387513]

約数ペア:

[(1, 81387513), (3, 27129171), (9, 9043057), (67, 1214739), (71, 1146303), (201, 404913), (213, 382101), (603, 134971), (639, 127367), (1901, 42813), (4757, 17109), (5703, 14271)]