20295180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{823}}^1$

素因数の和:975

約数の個数: 72

約数和(自身を含む): 62086752

約数和(自身を除く): 41791572

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 137, 180, 274, 411, 548, 685, 822, 823, 1233, 1370, 1644, 1646, 2055, 2466, 2469, 2740, 3292, 4110, 4115, 4932, 4938, 6165, 7407, 8220, 8230, 9876, 12330, 12345, 14814, 16460, 24660, 24690, 29628, 37035, 49380, 74070, 112751, 148140, 225502, 338253, 451004, 563755, 676506, 1014759, 1127510, 1353012, 1691265, 2029518, 2255020, 3382530, 4059036, 5073795, 6765060, 10147590, 20295180]

約数ペア:

[(1, 20295180), (2, 10147590), (3, 6765060), (4, 5073795), (5, 4059036), (6, 3382530), (9, 2255020), (10, 2029518), (12, 1691265), (15, 1353012), (18, 1127510), (20, 1014759), (30, 676506), (36, 563755), (45, 451004), (60, 338253), (90, 225502), (137, 148140), (180, 112751), (274, 74070), (411, 49380), (548, 37035), (685, 29628), (822, 24690), (823, 24660), (1233, 16460), (1370, 14814), (1644, 12345), (1646, 12330), (2055, 9876), (2466, 8230), (2469, 8220), (2740, 7407), (3292, 6165), (4110, 4938), (4115, 4932)]