19687195

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{197}}^1$

素因数の和:315

約数の個数: 32

約数和(自身を含む): 27371520

約数和(自身を除く): 7684325

約数列:

[1, 5, 11, 23, 55, 79, 115, 197, 253, 395, 869, 985, 1265, 1817, 2167, 4345, 4531, 9085, 10835, 15563, 19987, 22655, 49841, 77815, 99935, 171193, 249205, 357949, 855965, 1789745, 3937439, 19687195]

約数ペア:

[(1, 19687195), (5, 3937439), (11, 1789745), (23, 855965), (55, 357949), (79, 249205), (115, 171193), (197, 99935), (253, 77815), (395, 49841), (869, 22655), (985, 19987), (1265, 15563), (1817, 10835), (2167, 9085), (4345, 4531)]