19905951

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{211}}^1$

素因数の和:327

約数の個数: 32

約数和(自身を含む): 29917440

約数和(自身を除く): 10011489

約数列:

[1, 3, 13, 39, 41, 59, 123, 177, 211, 533, 633, 767, 1599, 2301, 2419, 2743, 7257, 8229, 8651, 12449, 25953, 31447, 37347, 94341, 112463, 161837, 337389, 485511, 510409, 1531227, 6635317, 19905951]

約数ペア:

[(1, 19905951), (3, 6635317), (13, 1531227), (39, 510409), (41, 485511), (59, 337389), (123, 161837), (177, 112463), (211, 94341), (533, 37347), (633, 31447), (767, 25953), (1599, 12449), (2301, 8651), (2419, 8229), (2743, 7257)]