165799580

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{211}}^1\times {\mathrm{389}}^1$

素因数の和:710

約数の個数: 48

約数和(自身を含む): 354201120

約数和(自身を除く): 188401540

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 211, 389, 404, 422, 505, 778, 844, 1010, 1055, 1556, 1945, 2020, 2110, 3890, 4220, 7780, 21311, 39289, 42622, 78578, 82079, 85244, 106555, 157156, 164158, 196445, 213110, 328316, 392890, 410395, 426220, 785780, 820790, 1641580, 8289979, 16579958, 33159916, 41449895, 82899790, 165799580]

約数ペア:

[(1, 165799580), (2, 82899790), (4, 41449895), (5, 33159916), (10, 16579958), (20, 8289979), (101, 1641580), (202, 820790), (211, 785780), (389, 426220), (404, 410395), (422, 392890), (505, 328316), (778, 213110), (844, 196445), (1010, 164158), (1055, 157156), (1556, 106555), (1945, 85244), (2020, 82079), (2110, 78578), (3890, 42622), (4220, 39289), (7780, 21311)]