19478991

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{54563}}^1$

素因数の和:54590

約数の個数: 16

約数和(自身を含む): 31428864

約数和(自身を除く): 11949873

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 54563, 163689, 381941, 927571, 1145823, 2782713, 6492997, 19478991]

約数ペア:

[(1, 19478991), (3, 6492997), (7, 2782713), (17, 1145823), (21, 927571), (51, 381941), (119, 163689), (357, 54563)]