81011973

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{211}}^1\times {\mathrm{389}}^1$

素因数の和:657

約数の個数: 32

約数和(自身を含む): 126996480

約数和(自身を除く): 45984507

約数列:

[1, 3, 7, 21, 47, 141, 211, 329, 389, 633, 987, 1167, 1477, 2723, 4431, 8169, 9917, 18283, 29751, 54849, 69419, 82079, 127981, 208257, 246237, 383943, 574553, 1723659, 3857713, 11573139, 27003991, 81011973]

約数ペア:

[(1, 81011973), (3, 27003991), (7, 11573139), (21, 3857713), (47, 1723659), (141, 574553), (211, 383943), (329, 246237), (389, 208257), (633, 127981), (987, 82079), (1167, 69419), (1477, 54849), (2723, 29751), (4431, 18283), (8169, 9917)]