1320242020

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{741709}}^1$

素因数の和:741807

約数の個数: 24

約数和(自身を含む): 2803663800

約数和(自身を除く): 1483421780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 741709, 1483418, 2966836, 3708545, 7417090, 14834180, 66012101, 132024202, 264048404, 330060505, 660121010, 1320242020]

約数ペア:

[(1, 1320242020), (2, 660121010), (4, 330060505), (5, 264048404), (10, 132024202), (20, 66012101), (89, 14834180), (178, 7417090), (356, 3708545), (445, 2966836), (890, 1483418), (1780, 741709)]