21839480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41999}}^1$

素因数の和:42023

約数の個数: 32

約数和(自身を含む): 52920000

約数和(自身を除く): 31080520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 41999, 83998, 167996, 209995, 335992, 419990, 545987, 839980, 1091974, 1679960, 2183948, 2729935, 4367896, 5459870, 10919740, 21839480]

約数ペア:

[(1, 21839480), (2, 10919740), (4, 5459870), (5, 4367896), (8, 2729935), (10, 2183948), (13, 1679960), (20, 1091974), (26, 839980), (40, 545987), (52, 419990), (65, 335992), (104, 209995), (130, 167996), (260, 83998), (520, 41999)]