79990900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{72719}}^1$

素因数の和:72744

約数の個数: 36

約数和(自身を含む): 189362880

約数和(自身を除く): 109371980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 275, 550, 1100, 72719, 145438, 290876, 363595, 727190, 799909, 1454380, 1599818, 1817975, 3199636, 3635950, 3999545, 7271900, 7999090, 15998180, 19997725, 39995450, 79990900]

約数ペア:

[(1, 79990900), (2, 39995450), (4, 19997725), (5, 15998180), (10, 7999090), (11, 7271900), (20, 3999545), (22, 3635950), (25, 3199636), (44, 1817975), (50, 1599818), (55, 1454380), (100, 799909), (110, 727190), (220, 363595), (275, 290876), (550, 145438), (1100, 72719)]