17810980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4261}}^1$

素因数の和:4300

約数の個数: 48

約数和(自身を含む): 42960960

約数和(自身を除く): 25149980

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 4261, 8522, 17044, 21305, 42610, 46871, 80959, 85220, 93742, 161918, 187484, 234355, 323836, 404795, 468710, 809590, 890549, 937420, 1619180, 1781098, 3562196, 4452745, 8905490, 17810980]

約数ペア:

[(1, 17810980), (2, 8905490), (4, 4452745), (5, 3562196), (10, 1781098), (11, 1619180), (19, 937420), (20, 890549), (22, 809590), (38, 468710), (44, 404795), (55, 323836), (76, 234355), (95, 187484), (110, 161918), (190, 93742), (209, 85220), (220, 80959), (380, 46871), (418, 42610), (836, 21305), (1045, 17044), (2090, 8522), (4180, 4261)]