21609160

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{10193}}^1$

素因数の和:10257

約数の個数: 32

約数和(自身を含む): 49542840

約数和(自身を除く): 27933680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 10193, 20386, 40772, 50965, 81544, 101930, 203860, 407720, 540229, 1080458, 2160916, 2701145, 4321832, 5402290, 10804580, 21609160]

約数ペア:

[(1, 21609160), (2, 10804580), (4, 5402290), (5, 4321832), (8, 2701145), (10, 2160916), (20, 1080458), (40, 540229), (53, 407720), (106, 203860), (212, 101930), (265, 81544), (424, 50965), (530, 40772), (1060, 20386), (2120, 10193)]