991168540

素因数分解:

$2^2\times 5^1\times {\mathrm{12829}}^1\times {\mathrm{3863}}^1$

素因数の和:16701

約数の個数: 24

約数和(自身を含む): 2082155040

約数和(自身を除く): 1090986500

約数列:

[1, 2, 4, 5, 10, 20, 3863, 7726, 12829, 15452, 19315, 25658, 38630, 51316, 64145, 77260, 128290, 256580, 49558427, 99116854, 198233708, 247792135, 495584270, 991168540]

約数ペア:

[(1, 991168540), (2, 495584270), (4, 247792135), (5, 198233708), (10, 99116854), (20, 49558427), (3863, 256580), (7726, 128290), (12829, 77260), (15452, 64145), (19315, 51316), (25658, 38630)]