8257990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{457}}^1$

素因数の和:616

約数の個数: 32

約数和(自身を含む): 16158240

約数和(自身を除く): 7900250

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 139, 278, 457, 695, 914, 1390, 1807, 2285, 3614, 4570, 5941, 9035, 11882, 18070, 29705, 59410, 63523, 127046, 317615, 635230, 825799, 1651598, 4128995, 8257990]

約数ペア:

[(1, 8257990), (2, 4128995), (5, 1651598), (10, 825799), (13, 635230), (26, 317615), (65, 127046), (130, 63523), (139, 59410), (278, 29705), (457, 18070), (695, 11882), (914, 9035), (1390, 5941), (1807, 4570), (2285, 3614)]