21520496

素因数分解:

$2^4\times {\mathrm{317}}^1\times {\mathrm{4243}}^1$

素因数の和:4568

約数の個数: 20

約数和(自身を含む): 41837352

約数和(自身を除く): 20316856

約数列:

[1, 2, 4, 8, 16, 317, 634, 1268, 2536, 4243, 5072, 8486, 16972, 33944, 67888, 1345031, 2690062, 5380124, 10760248, 21520496]

約数ペア:

[(1, 21520496), (2, 10760248), (4, 5380124), (8, 2690062), (16, 1345031), (317, 67888), (634, 33944), (1268, 16972), (2536, 8486), (4243, 5072)]