21168628

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{9929}}^1$

素因数の和:9987

約数の個数: 24

約数和(自身を含む): 40871880

約数和(自身を除く): 19703252

約数列:

[1, 2, 4, 13, 26, 41, 52, 82, 164, 533, 1066, 2132, 9929, 19858, 39716, 129077, 258154, 407089, 516308, 814178, 1628356, 5292157, 10584314, 21168628]

約数ペア:

[(1, 21168628), (2, 10584314), (4, 5292157), (13, 1628356), (26, 814178), (41, 516308), (52, 407089), (82, 258154), (164, 129077), (533, 39716), (1066, 19858), (2132, 9929)]