20945337

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{163}}^1\times {\mathrm{211}}^1$

素因数の和:413

約数の個数: 32

約数和(自身を含む): 33377280

約数和(自身を除く): 12431943

約数列:

[1, 3, 7, 21, 29, 87, 163, 203, 211, 489, 609, 633, 1141, 1477, 3423, 4431, 4727, 6119, 14181, 18357, 33089, 34393, 42833, 99267, 103179, 128499, 240751, 722253, 997397, 2992191, 6981779, 20945337]

約数ペア:

[(1, 20945337), (3, 6981779), (7, 2992191), (21, 997397), (29, 722253), (87, 240751), (163, 128499), (203, 103179), (211, 99267), (489, 42833), (609, 34393), (633, 33089), (1141, 18357), (1477, 14181), (3423, 6119), (4431, 4727)]