81528160

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{10399}}^1$

素因数の和:10428

約数の個数: 72

約数和(自身を含む): 224078400

約数和(自身を除く): 142550240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 3920, 7840, 10399, 20798, 41596, 51995, 72793, 83192, 103990, 145586, 166384, 207980, 291172, 332768, 363965, 415960, 509551, 582344, 727930, 831920, 1019102, 1164688, 1455860, 1663840, 2038204, 2329376, 2547755, 2911720, 4076408, 5095510, 5823440, 8152816, 10191020, 11646880, 16305632, 20382040, 40764080, 81528160]

約数ペア:

[(1, 81528160), (2, 40764080), (4, 20382040), (5, 16305632), (7, 11646880), (8, 10191020), (10, 8152816), (14, 5823440), (16, 5095510), (20, 4076408), (28, 2911720), (32, 2547755), (35, 2329376), (40, 2038204), (49, 1663840), (56, 1455860), (70, 1164688), (80, 1019102), (98, 831920), (112, 727930), (140, 582344), (160, 509551), (196, 415960), (224, 363965), (245, 332768), (280, 291172), (392, 207980), (490, 166384), (560, 145586), (784, 103990), (980, 83192), (1120, 72793), (1568, 51995), (1960, 41596), (3920, 20798), (7840, 10399)]