199641080

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{12203}}^1$

素因数の和:12623

約数の個数: 32

約数和(自身を含む): 450327600

約数和(自身を除く): 250686520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 818, 1636, 2045, 3272, 4090, 8180, 12203, 16360, 24406, 48812, 61015, 97624, 122030, 244060, 488120, 4991027, 9982054, 19964108, 24955135, 39928216, 49910270, 99820540, 199641080]

約数ペア:

[(1, 199641080), (2, 99820540), (4, 49910270), (5, 39928216), (8, 24955135), (10, 19964108), (20, 9982054), (40, 4991027), (409, 488120), (818, 244060), (1636, 122030), (2045, 97624), (3272, 61015), (4090, 48812), (8180, 24406), (12203, 16360)]