27980745

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:182

約数の個数: 64

約数和(自身を含む): 51093504

約数和(自身を除く): 23112759

約数列:

[1, 3, 5, 13, 15, 39, 43, 47, 65, 71, 129, 141, 195, 213, 215, 235, 355, 559, 611, 645, 705, 923, 1065, 1677, 1833, 2021, 2769, 2795, 3053, 3055, 3337, 4615, 6063, 8385, 9159, 9165, 10011, 10105, 13845, 15265, 16685, 26273, 30315, 39689, 43381, 45795, 50055, 78819, 119067, 130143, 131365, 143491, 198445, 216905, 394095, 430473, 595335, 650715, 717455, 1865383, 2152365, 5596149, 9326915, 27980745]

約数ペア:

[(1, 27980745), (3, 9326915), (5, 5596149), (13, 2152365), (15, 1865383), (39, 717455), (43, 650715), (47, 595335), (65, 430473), (71, 394095), (129, 216905), (141, 198445), (195, 143491), (213, 131365), (215, 130143), (235, 119067), (355, 78819), (559, 50055), (611, 45795), (645, 43381), (705, 39689), (923, 30315), (1065, 26273), (1677, 16685), (1833, 15265), (2021, 13845), (2769, 10105), (2795, 10011), (3053, 9165), (3055, 9159), (3337, 8385), (4615, 6063)]