20081517281

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{223}}^1\times {\mathrm{569}}^1\times {\mathrm{983}}^1$

素因数の和:1805

約数の個数: 32

約数和(自身を含む): 24122327040

約数和(自身を除く): 4040809759

約数列:

[1, 7, 23, 161, 223, 569, 983, 1561, 3983, 5129, 6881, 13087, 22609, 35903, 91609, 126887, 158263, 219209, 559327, 888209, 1534463, 2918401, 3915289, 5041807, 12864521, 20428807, 35292649, 90051647, 124729921, 873109447, 2868788183, 20081517281]

約数ペア:

[(1, 20081517281), (7, 2868788183), (23, 873109447), (161, 124729921), (223, 90051647), (569, 35292649), (983, 20428807), (1561, 12864521), (3983, 5041807), (5129, 3915289), (6881, 2918401), (13087, 1534463), (22609, 888209), (35903, 559327), (91609, 219209), (126887, 158263)]