17898980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{81359}}^1$

素因数の和:81379

約数の個数: 24

約数和(自身を含む): 41005440

約数和(自身を除く): 23106460

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 81359, 162718, 325436, 406795, 813590, 894949, 1627180, 1789898, 3579796, 4474745, 8949490, 17898980]

約数ペア:

[(1, 17898980), (2, 8949490), (4, 4474745), (5, 3579796), (10, 1789898), (11, 1627180), (20, 894949), (22, 813590), (44, 406795), (55, 325436), (110, 162718), (220, 81359)]