20443140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{829}}^1$

素因数の和:981

約数の個数: 72

約数和(自身を含む): 62538840

約数和(自身を除く): 42095700

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, 829, 1233, 1370, 1644, 1658, 2055, 2466, 2487, 2740, 3316, 4110, 4145, 4932, 4974, 6165, 7461, 8220, 8290, 9948, 12330, 12435, 14922, 16580, 24660, 24870, 29844, 37305, 49740, 74610, 113573, 149220, 227146, 340719, 454292, 567865, 681438, 1022157, 1135730, 1362876, 1703595, 2044314, 2271460, 3407190, 4088628, 5110785, 6814380, 10221570, 20443140]

約数ペア:

[(1, 20443140), (2, 10221570), (3, 6814380), (4, 5110785), (5, 4088628), (6, 3407190), (9, 2271460), (10, 2044314), (12, 1703595), (15, 1362876), (18, 1135730), (20, 1022157), (30, 681438), (36, 567865), (45, 454292), (60, 340719), (90, 227146), (137, 149220), (180, 113573), (274, 74610), (411, 49740), (548, 37305), (685, 29844), (822, 24870), (829, 24660), (1233, 16580), (1370, 14922), (1644, 12435), (1658, 12330), (2055, 9948), (2466, 8290), (2487, 8220), (2740, 7461), (3316, 6165), (4110, 4974), (4145, 4932)]