21164080

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{5399}}^1$

素因数の和:5426

約数の個数: 60

約数和(自身を含む): 57250800

約数和(自身を除く): 36086720

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, 5399, 10798, 21596, 26995, 37793, 43192, 53990, 75586, 86384, 107980, 151172, 188965, 215960, 264551, 302344, 377930, 431920, 529102, 604688, 755860, 1058204, 1322755, 1511720, 2116408, 2645510, 3023440, 4232816, 5291020, 10582040, 21164080]

約数ペア:

[(1, 21164080), (2, 10582040), (4, 5291020), (5, 4232816), (7, 3023440), (8, 2645510), (10, 2116408), (14, 1511720), (16, 1322755), (20, 1058204), (28, 755860), (35, 604688), (40, 529102), (49, 431920), (56, 377930), (70, 302344), (80, 264551), (98, 215960), (112, 188965), (140, 151172), (196, 107980), (245, 86384), (280, 75586), (392, 53990), (490, 43192), (560, 37793), (784, 26995), (980, 21596), (1960, 10798), (3920, 5399)]