2977779

素因数分解:

$3^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{431}}^1$

素因数の和:495

約数の個数: 24

約数和(自身を含む): 4727808

約数和(自身を除く): 1750029

約数列:

[1, 3, 7, 21, 47, 49, 141, 147, 329, 431, 987, 1293, 2303, 3017, 6909, 9051, 20257, 21119, 60771, 63357, 141799, 425397, 992593, 2977779]

約数ペア:

[(1, 2977779), (3, 992593), (7, 425397), (21, 141799), (47, 63357), (49, 60771), (141, 21119), (147, 20257), (329, 9051), (431, 6909), (987, 3017), (1293, 2303)]