20901657

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{331}}^1$

素因数の和:469

約数の個数: 32

約数和(自身を含む): 33316864

約数和(自身を除く): 12415207

約数列:

[1, 3, 7, 21, 31, 93, 97, 217, 291, 331, 651, 679, 993, 2037, 2317, 3007, 6951, 9021, 10261, 21049, 30783, 32107, 63147, 71827, 96321, 215481, 224749, 674247, 995317, 2985951, 6967219, 20901657]

約数ペア:

[(1, 20901657), (3, 6967219), (7, 2985951), (21, 995317), (31, 674247), (93, 224749), (97, 215481), (217, 96321), (291, 71827), (331, 63147), (651, 32107), (679, 30783), (993, 21049), (2037, 10261), (2317, 9021), (3007, 6951)]