20970411

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{3947}}^1$

素因数の和:3991

約数の個数: 32

約数和(自身を含む): 36384768

約数和(自身を除く): 15414357

約数列:

[1, 3, 7, 11, 21, 23, 33, 69, 77, 161, 231, 253, 483, 759, 1771, 3947, 5313, 11841, 27629, 43417, 82887, 90781, 130251, 272343, 303919, 635467, 911757, 998591, 1906401, 2995773, 6990137, 20970411]

約数ペア:

[(1, 20970411), (3, 6990137), (7, 2995773), (11, 1906401), (21, 998591), (23, 911757), (33, 635467), (69, 303919), (77, 272343), (161, 130251), (231, 90781), (253, 82887), (483, 43417), (759, 27629), (1771, 11841), (3947, 5313)]