20297937

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{569}}^1$

素因数の和:653

約数の個数: 32

約数和(自身を含む): 31518720

約数和(自身を除く): 11220783

約数列:

[1, 3, 11, 23, 33, 47, 69, 141, 253, 517, 569, 759, 1081, 1551, 1707, 3243, 6259, 11891, 13087, 18777, 26743, 35673, 39261, 80229, 143957, 294173, 431871, 615089, 882519, 1845267, 6765979, 20297937]

約数ペア:

[(1, 20297937), (3, 6765979), (11, 1845267), (23, 882519), (33, 615089), (47, 431871), (69, 294173), (141, 143957), (253, 80229), (517, 39261), (569, 35673), (759, 26743), (1081, 18777), (1551, 13087), (1707, 11891), (3243, 6259)]