21273772

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{569}}^1\times {\mathrm{719}}^1$

素因数の和:1305

約数の個数: 24

約数和(自身を含む): 40219200

約数和(自身を除く): 18945428

約数列:

[1, 2, 4, 13, 26, 52, 569, 719, 1138, 1438, 2276, 2876, 7397, 9347, 14794, 18694, 29588, 37388, 409111, 818222, 1636444, 5318443, 10636886, 21273772]

約数ペア:

[(1, 21273772), (2, 10636886), (4, 5318443), (13, 1636444), (26, 818222), (52, 409111), (569, 37388), (719, 29588), (1138, 18694), (1438, 14794), (2276, 9347), (2876, 7397)]