19947095

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{349}}^1$

素因数の和:455

約数の個数: 32

約数和(自身を含む): 29030400

約数和(自身を除く): 9083305

約数列:

[1, 5, 7, 23, 35, 71, 115, 161, 349, 355, 497, 805, 1633, 1745, 2443, 2485, 8027, 8165, 11431, 12215, 24779, 40135, 56189, 57155, 123895, 173453, 280945, 569917, 867265, 2849585, 3989419, 19947095]

約数ペア:

[(1, 19947095), (5, 3989419), (7, 2849585), (23, 867265), (35, 569917), (71, 280945), (115, 173453), (161, 123895), (349, 57155), (355, 56189), (497, 40135), (805, 24779), (1633, 12215), (1745, 11431), (2443, 8165), (2485, 8027)]