640620764

素因数分解:

$2^2\times 7^1\times {\mathrm{1759}}^1\times {\mathrm{13007}}^1$

素因数の和:14777

約数の個数: 24

約数和(自身を含む): 1282068480

約数和(自身を除く): 641447716

約数列:

[1, 2, 4, 7, 14, 28, 1759, 3518, 7036, 12313, 13007, 24626, 26014, 49252, 52028, 91049, 182098, 364196, 22879313, 45758626, 91517252, 160155191, 320310382, 640620764]

約数ペア:

[(1, 640620764), (2, 320310382), (4, 160155191), (7, 91517252), (14, 45758626), (28, 22879313), (1759, 364196), (3518, 182098), (7036, 91049), (12313, 52028), (13007, 49252), (24626, 26014)]