18865227987

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{991}}^1\times {\mathrm{72937}}^1$

素因数の和:73963

約数の個数: 24

約数和(自身を含む): 28218253440

約数和(自身を除く): 9353025453

約数列:

[1, 3, 9, 29, 87, 261, 991, 2973, 8919, 28739, 72937, 86217, 218811, 258651, 656433, 2115173, 6345519, 19036557, 72280567, 216841701, 650525103, 2096136443, 6288409329, 18865227987]

約数ペア:

[(1, 18865227987), (3, 6288409329), (9, 2096136443), (29, 650525103), (87, 216841701), (261, 72280567), (991, 19036557), (2973, 6345519), (8919, 2115173), (28739, 656433), (72937, 258651), (86217, 218811)]