20458490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{653}}^1$

素因数の和:914

約数の個数: 32

約数和(自身を含む): 39883536

約数和(自身を除く): 19425046

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 241, 482, 653, 1205, 1306, 2410, 3133, 3265, 6266, 6530, 8489, 15665, 16978, 31330, 42445, 84890, 157373, 314746, 786865, 1573730, 2045849, 4091698, 10229245, 20458490]

約数ペア:

[(1, 20458490), (2, 10229245), (5, 4091698), (10, 2045849), (13, 1573730), (26, 786865), (65, 314746), (130, 157373), (241, 84890), (482, 42445), (653, 31330), (1205, 16978), (1306, 15665), (2410, 8489), (3133, 6530), (3265, 6266)]