15997600

素因数分解:

$2^5\times 5^2\times {\mathrm{19997}}^1$

素因数の和:20017

約数の個数: 36

約数和(自身を含む): 39056094

約数和(自身を除く): 23058494

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 19997, 39994, 79988, 99985, 159976, 199970, 319952, 399940, 499925, 639904, 799880, 999850, 1599760, 1999700, 3199520, 3999400, 7998800, 15997600]

約数ペア:

[(1, 15997600), (2, 7998800), (4, 3999400), (5, 3199520), (8, 1999700), (10, 1599760), (16, 999850), (20, 799880), (25, 639904), (32, 499925), (40, 399940), (50, 319952), (80, 199970), (100, 159976), (160, 99985), (200, 79988), (400, 39994), (800, 19997)]