209900901

素因数分解:

$3^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{211}}^1\times {\mathrm{373}}^1$

素因数の和:721

約数の個数: 32

約数和(自身を含む): 324763648

約数和(自身を除く): 114862747

約数列:

[1, 3, 7, 21, 127, 211, 373, 381, 633, 889, 1119, 1477, 2611, 2667, 4431, 7833, 26797, 47371, 78703, 80391, 142113, 187579, 236109, 331597, 550921, 562737, 994791, 1652763, 9995281, 29985843, 69966967, 209900901]

約数ペア:

[(1, 209900901), (3, 69966967), (7, 29985843), (21, 9995281), (127, 1652763), (211, 994791), (373, 562737), (381, 550921), (633, 331597), (889, 236109), (1119, 187579), (1477, 142113), (2611, 80391), (2667, 78703), (4431, 47371), (7833, 26797)]