15872240

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{997}}^1$

素因数の和:1209

約数の個数: 40

約数和(自身を含む): 37125600

約数和(自身を除く): 21253360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 398, 796, 995, 997, 1592, 1990, 1994, 3184, 3980, 3988, 4985, 7960, 7976, 9970, 15920, 15952, 19940, 39880, 79760, 198403, 396806, 793612, 992015, 1587224, 1984030, 3174448, 3968060, 7936120, 15872240]

約数ペア:

[(1, 15872240), (2, 7936120), (4, 3968060), (5, 3174448), (8, 1984030), (10, 1587224), (16, 992015), (20, 793612), (40, 396806), (80, 198403), (199, 79760), (398, 39880), (796, 19940), (995, 15952), (997, 15920), (1592, 9970), (1990, 7976), (1994, 7960), (3184, 4985), (3980, 3988)]