21234860

素因数分解:

$2^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{3947}}^1$

素因数の和:4225

約数の個数: 24

約数和(自身を含む): 44770320

約数和(自身を除く): 23535460

約数列:

[1, 2, 4, 5, 10, 20, 269, 538, 1076, 1345, 2690, 3947, 5380, 7894, 15788, 19735, 39470, 78940, 1061743, 2123486, 4246972, 5308715, 10617430, 21234860]

約数ペア:

[(1, 21234860), (2, 10617430), (4, 5308715), (5, 4246972), (10, 2123486), (20, 1061743), (269, 78940), (538, 39470), (1076, 19735), (1345, 15788), (2690, 7894), (3947, 5380)]