20679659

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{283}}^1$

素因数の和:387

約数の個数: 32

約数和(自身を含む): 28245504

約数和(自身を除く): 7565845

約数列:

[1, 7, 11, 13, 73, 77, 91, 143, 283, 511, 803, 949, 1001, 1981, 3113, 3679, 5621, 6643, 10439, 20659, 21791, 25753, 40469, 73073, 144613, 227249, 268567, 283283, 1590743, 1879969, 2954237, 20679659]

約数ペア:

[(1, 20679659), (7, 2954237), (11, 1879969), (13, 1590743), (73, 283283), (77, 268567), (91, 227249), (143, 144613), (283, 73073), (511, 40469), (803, 25753), (949, 21791), (1001, 20659), (1981, 10439), (3113, 6643), (3679, 5621)]