21360080

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{5449}}^1$

素因数の和:5476

約数の個数: 60

約数和(自身を含む): 57780900

約数和(自身を除く): 36420820

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 5449, 10898, 21796, 27245, 38143, 43592, 54490, 76286, 87184, 108980, 152572, 190715, 217960, 267001, 305144, 381430, 435920, 534002, 610288, 762860, 1068004, 1335005, 1525720, 2136008, 2670010, 3051440, 4272016, 5340020, 10680040, 21360080]

約数ペア:

[(1, 21360080), (2, 10680040), (4, 5340020), (5, 4272016), (7, 3051440), (8, 2670010), (10, 2136008), (14, 1525720), (16, 1335005), (20, 1068004), (28, 762860), (35, 610288), (40, 534002), (49, 435920), (56, 381430), (70, 305144), (80, 267001), (98, 217960), (112, 190715), (140, 152572), (196, 108980), (245, 87184), (280, 76286), (392, 54490), (490, 43592), (560, 38143), (784, 27245), (980, 21796), (1960, 10898), (3920, 5449)]