19681869

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{211}}^1$

素因数の和:321

約数の個数: 32

約数和(自身を含む): 29306880

約数和(自身を除く): 9625011

約数列:

[1, 3, 17, 31, 51, 59, 93, 177, 211, 527, 633, 1003, 1581, 1829, 3009, 3587, 5487, 6541, 10761, 12449, 19623, 31093, 37347, 93279, 111197, 211633, 333591, 385919, 634899, 1157757, 6560623, 19681869]

約数ペア:

[(1, 19681869), (3, 6560623), (17, 1157757), (31, 634899), (51, 385919), (59, 333591), (93, 211633), (177, 111197), (211, 93279), (527, 37347), (633, 31093), (1003, 19623), (1581, 12449), (1829, 10761), (3009, 6541), (3587, 5487)]