639173890

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{13187}}^1$

素因数の和:13362

約数の個数: 32

約数和(自身を含む): 1190718144

約数和(自身を除く): 551544254

約数列:

[1, 2, 5, 10, 37, 74, 131, 185, 262, 370, 655, 1310, 4847, 9694, 13187, 24235, 26374, 48470, 65935, 131870, 487919, 975838, 1727497, 2439595, 3454994, 4879190, 8637485, 17274970, 63917389, 127834778, 319586945, 639173890]

約数ペア:

[(1, 639173890), (2, 319586945), (5, 127834778), (10, 63917389), (37, 17274970), (74, 8637485), (131, 4879190), (185, 3454994), (262, 2439595), (370, 1727497), (655, 975838), (1310, 487919), (4847, 131870), (9694, 65935), (13187, 48470), (24235, 26374)]