21000742015

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{823}}^1\times {\mathrm{4783}}^1$

素因数の和:5719

約数の個数: 32

約数和(自身を含む): 27814864896

約数和(自身を除く): 6814122881

約数列:

[1, 5, 11, 55, 97, 485, 823, 1067, 4115, 4783, 5335, 9053, 23915, 45265, 52613, 79831, 263065, 399155, 463951, 878141, 2319755, 3936409, 4390705, 5103461, 19682045, 25517305, 43300499, 216502495, 381831673, 1909158365, 4200148403, 21000742015]

約数ペア:

[(1, 21000742015), (5, 4200148403), (11, 1909158365), (55, 381831673), (97, 216502495), (485, 43300499), (823, 25517305), (1067, 19682045), (4115, 5103461), (4783, 4390705), (5335, 3936409), (9053, 2319755), (23915, 878141), (45265, 463951), (52613, 399155), (79831, 263065)]