20354139

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{563}}^1$

素因数の和:688

約数の個数: 32

約数和(自身を含む): 32847360

約数和(自身を除く): 12493221

約数列:

[1, 3, 9, 13, 27, 39, 103, 117, 309, 351, 563, 927, 1339, 1689, 2781, 4017, 5067, 7319, 12051, 15201, 21957, 36153, 57989, 65871, 173967, 197613, 521901, 753857, 1565703, 2261571, 6784713, 20354139]

約数ペア:

[(1, 20354139), (3, 6784713), (9, 2261571), (13, 1565703), (27, 753857), (39, 521901), (103, 197613), (117, 173967), (309, 65871), (351, 57989), (563, 36153), (927, 21957), (1339, 15201), (1689, 12051), (2781, 7319), (4017, 5067)]