21318107015

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1\times {\mathrm{49871}}^1$

素因数の和:50047

約数の個数: 32

約数和(自身を含む): 27921936384

約数和(自身を除く): 6603829369

約数列:

[1, 5, 17, 47, 85, 107, 235, 535, 799, 1819, 3995, 5029, 9095, 25145, 49871, 85493, 249355, 427465, 847807, 2343937, 4239035, 5336197, 11719685, 26680985, 39846929, 90715349, 199234645, 250801259, 453576745, 1254006295, 4263621403, 21318107015]

約数ペア:

[(1, 21318107015), (5, 4263621403), (17, 1254006295), (47, 453576745), (85, 250801259), (107, 199234645), (235, 90715349), (535, 39846929), (799, 26680985), (1819, 11719685), (3995, 5336197), (5029, 4239035), (9095, 2343937), (25145, 847807), (49871, 427465), (85493, 249355)]