391018509

素因数分解:

$3^4\times 7^1\times {\mathrm{757}}^1\times {\mathrm{911}}^1$

素因数の和:1687

約数の個数: 40

約数和(自身を含む): 669174528

約数和(自身を除く): 278156019

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 757, 911, 2271, 2733, 5299, 6377, 6813, 8199, 15897, 19131, 20439, 24597, 47691, 57393, 61317, 73791, 143073, 172179, 429219, 516537, 689627, 2068881, 4827389, 6206643, 14482167, 18619929, 43446501, 55859787, 130339503, 391018509]

約数ペア:

[(1, 391018509), (3, 130339503), (7, 55859787), (9, 43446501), (21, 18619929), (27, 14482167), (63, 6206643), (81, 4827389), (189, 2068881), (567, 689627), (757, 516537), (911, 429219), (2271, 172179), (2733, 143073), (5299, 73791), (6377, 61317), (6813, 57393), (8199, 47691), (15897, 24597), (19131, 20439)]