80431820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{2887}}^1$

素因数の和:3102

約数の個数: 48

約数和(自身を含む): 194073600

約数和(自身を除く): 113641780

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 199, 398, 796, 995, 1393, 1990, 2786, 2887, 3980, 5572, 5774, 6965, 11548, 13930, 14435, 20209, 27860, 28870, 40418, 57740, 80836, 101045, 202090, 404180, 574513, 1149026, 2298052, 2872565, 4021591, 5745130, 8043182, 11490260, 16086364, 20107955, 40215910, 80431820]

約数ペア:

[(1, 80431820), (2, 40215910), (4, 20107955), (5, 16086364), (7, 11490260), (10, 8043182), (14, 5745130), (20, 4021591), (28, 2872565), (35, 2298052), (70, 1149026), (140, 574513), (199, 404180), (398, 202090), (796, 101045), (995, 80836), (1393, 57740), (1990, 40418), (2786, 28870), (2887, 27860), (3980, 20209), (5572, 14435), (5774, 13930), (6965, 11548)]