21000751090

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{4909}}^1\times {\mathrm{38891}}^1$

素因数の和:43818

約数の個数: 32

約数和(自身を含む): 41247299520

約数和(自身を除く): 20246548430

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 4909, 9818, 24545, 38891, 49090, 53999, 77782, 107998, 194455, 269995, 388910, 427801, 539990, 855602, 2139005, 4278010, 190915919, 381831838, 954579595, 1909159190, 2100075109, 4200150218, 10500375545, 21000751090]

約数ペア:

[(1, 21000751090), (2, 10500375545), (5, 4200150218), (10, 2100075109), (11, 1909159190), (22, 954579595), (55, 381831838), (110, 190915919), (4909, 4278010), (9818, 2139005), (24545, 855602), (38891, 539990), (49090, 427801), (53999, 388910), (77782, 269995), (107998, 194455)]