20972700

素因数分解:

$2^2\times 3^2\times 5^2\times 7^1\times {\mathrm{3329}}^1$

素因数の和:3356

約数の個数: 108

約数和(自身を含む): 75151440

約数和(自身を除く): 54178740

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 25, 28, 30, 35, 36, 42, 45, 50, 60, 63, 70, 75, 84, 90, 100, 105, 126, 140, 150, 175, 180, 210, 225, 252, 300, 315, 350, 420, 450, 525, 630, 700, 900, 1050, 1260, 1575, 2100, 3150, 3329, 6300, 6658, 9987, 13316, 16645, 19974, 23303, 29961, 33290, 39948, 46606, 49935, 59922, 66580, 69909, 83225, 93212, 99870, 116515, 119844, 139818, 149805, 166450, 199740, 209727, 233030, 249675, 279636, 299610, 332900, 349545, 419454, 466060, 499350, 582575, 599220, 699090, 749025, 838908, 998700, 1048635, 1165150, 1398180, 1498050, 1747725, 2097270, 2330300, 2996100, 3495450, 4194540, 5243175, 6990900, 10486350, 20972700]

約数ペア:

[(1, 20972700), (2, 10486350), (3, 6990900), (4, 5243175), (5, 4194540), (6, 3495450), (7, 2996100), (9, 2330300), (10, 2097270), (12, 1747725), (14, 1498050), (15, 1398180), (18, 1165150), (20, 1048635), (21, 998700), (25, 838908), (28, 749025), (30, 699090), (35, 599220), (36, 582575), (42, 499350), (45, 466060), (50, 419454), (60, 349545), (63, 332900), (70, 299610), (75, 279636), (84, 249675), (90, 233030), (100, 209727), (105, 199740), (126, 166450), (140, 149805), (150, 139818), (175, 119844), (180, 116515), (210, 99870), (225, 93212), (252, 83225), (300, 69909), (315, 66580), (350, 59922), (420, 49935), (450, 46606), (525, 39948), (630, 33290), (700, 29961), (900, 23303), (1050, 19974), (1260, 16645), (1575, 13316), (2100, 9987), (3150, 6658), (3329, 6300)]