21139941715

素因数分解:

$5^1\times {\mathrm{89}}^1\times {\mathrm{271}}^1\times {\mathrm{307}}^1\times {\mathrm{571}}^1$

素因数の和:1243

約数の個数: 32

約数和(自身を含む): 25876730880

約数和(自身を除く): 4736789165

約数列:

[1, 5, 89, 271, 307, 445, 571, 1355, 1535, 2855, 24119, 27323, 50819, 83197, 120595, 136615, 154741, 175297, 254095, 415985, 773705, 876485, 7404533, 13771949, 15601433, 37022665, 47505487, 68859745, 78007165, 237527435, 4227988343, 21139941715]

約数ペア:

[(1, 21139941715), (5, 4227988343), (89, 237527435), (271, 78007165), (307, 68859745), (445, 47505487), (571, 37022665), (1355, 15601433), (1535, 13771949), (2855, 7404533), (24119, 876485), (27323, 773705), (50819, 415985), (83197, 254095), (120595, 175297), (136615, 154741)]