21390434

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{26539}}^1$

素因数の和:26585

約数の個数: 16

約数和(自身を含む): 35669760

約数和(自身を除く): 14279326

約数列:

[1, 2, 13, 26, 31, 62, 403, 806, 26539, 53078, 345007, 690014, 822709, 1645418, 10695217, 21390434]

約数ペア:

[(1, 21390434), (2, 10695217), (13, 1645418), (26, 822709), (31, 690014), (62, 345007), (403, 53078), (806, 26539)]