20658960

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{4099}}^1$

素因数の和:4125

約数の個数: 120

約数和(自身を含む): 79310400

約数和(自身を除く): 58651440

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 420, 504, 560, 630, 720, 840, 1008, 1260, 1680, 2520, 4099, 5040, 8198, 12297, 16396, 20495, 24594, 28693, 32792, 36891, 40990, 49188, 57386, 61485, 65584, 73782, 81980, 86079, 98376, 114772, 122970, 143465, 147564, 163960, 172158, 184455, 196752, 229544, 245940, 258237, 286930, 295128, 327920, 344316, 368910, 430395, 459088, 491880, 516474, 573860, 590256, 688632, 737820, 860790, 983760, 1032948, 1147720, 1291185, 1377264, 1475640, 1721580, 2065896, 2295440, 2582370, 2951280, 3443160, 4131792, 5164740, 6886320, 10329480, 20658960]

約数ペア:

[(1, 20658960), (2, 10329480), (3, 6886320), (4, 5164740), (5, 4131792), (6, 3443160), (7, 2951280), (8, 2582370), (9, 2295440), (10, 2065896), (12, 1721580), (14, 1475640), (15, 1377264), (16, 1291185), (18, 1147720), (20, 1032948), (21, 983760), (24, 860790), (28, 737820), (30, 688632), (35, 590256), (36, 573860), (40, 516474), (42, 491880), (45, 459088), (48, 430395), (56, 368910), (60, 344316), (63, 327920), (70, 295128), (72, 286930), (80, 258237), (84, 245940), (90, 229544), (105, 196752), (112, 184455), (120, 172158), (126, 163960), (140, 147564), (144, 143465), (168, 122970), (180, 114772), (210, 98376), (240, 86079), (252, 81980), (280, 73782), (315, 65584), (336, 61485), (360, 57386), (420, 49188), (504, 40990), (560, 36891), (630, 32792), (720, 28693), (840, 24594), (1008, 20495), (1260, 16396), (1680, 12297), (2520, 8198), (4099, 5040)]