8198800

素因数分解:

$2^4\times 5^2\times {\mathrm{103}}^1\times {\mathrm{199}}^1$

素因数の和:320

約数の個数: 60

約数和(自身を含む): 19988800

約数和(自身を除く): 11790000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 103, 199, 200, 206, 398, 400, 412, 515, 796, 824, 995, 1030, 1592, 1648, 1990, 2060, 2575, 3184, 3980, 4120, 4975, 5150, 7960, 8240, 9950, 10300, 15920, 19900, 20497, 20600, 39800, 40994, 41200, 79600, 81988, 102485, 163976, 204970, 327952, 409940, 512425, 819880, 1024850, 1639760, 2049700, 4099400, 8198800]

約数ペア:

[(1, 8198800), (2, 4099400), (4, 2049700), (5, 1639760), (8, 1024850), (10, 819880), (16, 512425), (20, 409940), (25, 327952), (40, 204970), (50, 163976), (80, 102485), (100, 81988), (103, 79600), (199, 41200), (200, 40994), (206, 39800), (398, 20600), (400, 20497), (412, 19900), (515, 15920), (796, 10300), (824, 9950), (995, 8240), (1030, 7960), (1592, 5150), (1648, 4975), (1990, 4120), (2060, 3980), (2575, 3184)]