19850961

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1$

素因数の和:261

約数の個数: 32

約数和(自身を含む): 29611008

約数和(自身を除く): 9760047

約数列:

[1, 3, 13, 39, 67, 71, 107, 201, 213, 321, 871, 923, 1391, 2613, 2769, 4173, 4757, 7169, 7597, 14271, 21507, 22791, 61841, 93197, 98761, 185523, 279591, 296283, 508999, 1526997, 6616987, 19850961]

約数ペア:

[(1, 19850961), (3, 6616987), (13, 1526997), (39, 508999), (67, 296283), (71, 279591), (107, 185523), (201, 98761), (213, 93197), (321, 61841), (871, 22791), (923, 21507), (1391, 14271), (2613, 7597), (2769, 7169), (4173, 4757)]