3947881

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1$

素因数の和:181

約数の個数: 24

約数和(自身を含む): 4990464

約数和(自身を除く): 1042583

約数列:

[1, 7, 23, 31, 49, 113, 161, 217, 713, 791, 1127, 1519, 2599, 3503, 4991, 5537, 18193, 24521, 34937, 80569, 127351, 171647, 563983, 3947881]

約数ペア:

[(1, 3947881), (7, 563983), (23, 171647), (31, 127351), (49, 80569), (113, 34937), (161, 24521), (217, 18193), (713, 5537), (791, 4991), (1127, 3503), (1519, 2599)]