18656990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{907}}^1$

素因数の和:953

約数の個数: 48

約数和(自身を含む): 39127536

約数和(自身を除く): 20470546

約数列:

[1, 2, 5, 10, 11, 17, 22, 34, 55, 85, 110, 121, 170, 187, 242, 374, 605, 907, 935, 1210, 1814, 1870, 2057, 4114, 4535, 9070, 9977, 10285, 15419, 19954, 20570, 30838, 49885, 77095, 99770, 109747, 154190, 169609, 219494, 339218, 548735, 848045, 1097470, 1696090, 1865699, 3731398, 9328495, 18656990]

約数ペア:

[(1, 18656990), (2, 9328495), (5, 3731398), (10, 1865699), (11, 1696090), (17, 1097470), (22, 848045), (34, 548735), (55, 339218), (85, 219494), (110, 169609), (121, 154190), (170, 109747), (187, 99770), (242, 77095), (374, 49885), (605, 30838), (907, 20570), (935, 19954), (1210, 15419), (1814, 10285), (1870, 9977), (2057, 9070), (4114, 4535)]