21371260

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{36847}}^1$

素因数の和:36885

約数の個数: 24

約数和(自身を含む): 46428480

約数和(自身を除く): 25057220

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 36847, 73694, 147388, 184235, 368470, 736940, 1068563, 2137126, 4274252, 5342815, 10685630, 21371260]

約数ペア:

[(1, 21371260), (2, 10685630), (4, 5342815), (5, 4274252), (10, 2137126), (20, 1068563), (29, 736940), (58, 368470), (116, 184235), (145, 147388), (290, 73694), (580, 36847)]