21000259990

素因数分解:

$2^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{1427}}^1\times {\mathrm{24943}}^1$

素因数の和:26436

約数の個数: 32

約数和(自身を含む): 38469634560

約数和(自身を除く): 17469374570

約数列:

[1, 2, 5, 10, 59, 118, 295, 590, 1427, 2854, 7135, 14270, 24943, 49886, 84193, 124715, 168386, 249430, 420965, 841930, 1471637, 2943274, 7358185, 14716370, 35593661, 71187322, 177968305, 355936610, 2100025999, 4200051998, 10500129995, 21000259990]

約数ペア:

[(1, 21000259990), (2, 10500129995), (5, 4200051998), (10, 2100025999), (59, 355936610), (118, 177968305), (295, 71187322), (590, 35593661), (1427, 14716370), (2854, 7358185), (7135, 2943274), (14270, 1471637), (24943, 841930), (49886, 420965), (84193, 249430), (124715, 168386)]