20917832

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{1447}}^1$

素因数の和:1605

約数の個数: 32

約数和(自身を含む): 42571200

約数和(自身を除く): 21653368

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 139, 278, 556, 1112, 1447, 1807, 2894, 3614, 5788, 7228, 11576, 14456, 18811, 37622, 75244, 150488, 201133, 402266, 804532, 1609064, 2614729, 5229458, 10458916, 20917832]

約数ペア:

[(1, 20917832), (2, 10458916), (4, 5229458), (8, 2614729), (13, 1609064), (26, 804532), (52, 402266), (104, 201133), (139, 150488), (278, 75244), (556, 37622), (1112, 18811), (1447, 14456), (1807, 11576), (2894, 7228), (3614, 5788)]