21507528

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{128021}}^1$

素因数の和:128037

約数の個数: 32

約数和(自身を含む): 61450560

約数和(自身を除く): 39943032

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 128021, 256042, 384063, 512084, 768126, 896147, 1024168, 1536252, 1792294, 2688441, 3072504, 3584588, 5376882, 7169176, 10753764, 21507528]

約数ペア:

[(1, 21507528), (2, 10753764), (3, 7169176), (4, 5376882), (6, 3584588), (7, 3072504), (8, 2688441), (12, 1792294), (14, 1536252), (21, 1024168), (24, 896147), (28, 768126), (42, 512084), (56, 384063), (84, 256042), (168, 128021)]