21567909

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{727}}^1$

素因数の和:801

約数の個数: 32

約数和(自身を含む): 33546240

約数和(自身を除く): 11978331

約数列:

[1, 3, 11, 29, 31, 33, 87, 93, 319, 341, 727, 899, 957, 1023, 2181, 2697, 7997, 9889, 21083, 22537, 23991, 29667, 63249, 67611, 231913, 247907, 653573, 695739, 743721, 1960719, 7189303, 21567909]

約数ペア:

[(1, 21567909), (3, 7189303), (11, 1960719), (29, 743721), (31, 695739), (33, 653573), (87, 247907), (93, 231913), (319, 67611), (341, 63249), (727, 29667), (899, 23991), (957, 22537), (1023, 21083), (2181, 9889), (2697, 7997)]