28006990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{881}}^1$

素因数の和:933

約数の個数: 48

約数和(自身を含む): 58487184

約数和(自身を除く): 30480194

約数列:

[1, 2, 5, 10, 11, 17, 22, 34, 55, 85, 110, 170, 187, 289, 374, 578, 881, 935, 1445, 1762, 1870, 2890, 3179, 4405, 6358, 8810, 9691, 14977, 15895, 19382, 29954, 31790, 48455, 74885, 96910, 149770, 164747, 254609, 329494, 509218, 823735, 1273045, 1647470, 2546090, 2800699, 5601398, 14003495, 28006990]

約数ペア:

[(1, 28006990), (2, 14003495), (5, 5601398), (10, 2800699), (11, 2546090), (17, 1647470), (22, 1273045), (34, 823735), (55, 509218), (85, 329494), (110, 254609), (170, 164747), (187, 149770), (289, 96910), (374, 74885), (578, 48455), (881, 31790), (935, 29954), (1445, 19382), (1762, 15895), (1870, 14977), (2890, 9691), (3179, 8810), (4405, 6358)]