19711440

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{3911}}^1$

素因数の和:3937

約数の個数: 120

約数和(自身を含む): 75673728

約数和(自身を除く): 55962288

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, 3911, 5040, 7822, 11733, 15644, 19555, 23466, 27377, 31288, 35199, 39110, 46932, 54754, 58665, 62576, 70398, 78220, 82131, 93864, 109508, 117330, 136885, 140796, 156440, 164262, 175995, 187728, 219016, 234660, 246393, 273770, 281592, 312880, 328524, 351990, 410655, 438032, 469320, 492786, 547540, 563184, 657048, 703980, 821310, 938640, 985572, 1095080, 1231965, 1314096, 1407960, 1642620, 1971144, 2190160, 2463930, 2815920, 3285240, 3942288, 4927860, 6570480, 9855720, 19711440]

約数ペア:

[(1, 19711440), (2, 9855720), (3, 6570480), (4, 4927860), (5, 3942288), (6, 3285240), (7, 2815920), (8, 2463930), (9, 2190160), (10, 1971144), (12, 1642620), (14, 1407960), (15, 1314096), (16, 1231965), (18, 1095080), (20, 985572), (21, 938640), (24, 821310), (28, 703980), (30, 657048), (35, 563184), (36, 547540), (40, 492786), (42, 469320), (45, 438032), (48, 410655), (56, 351990), (60, 328524), (63, 312880), (70, 281592), (72, 273770), (80, 246393), (84, 234660), (90, 219016), (105, 187728), (112, 175995), (120, 164262), (126, 156440), (140, 140796), (144, 136885), (168, 117330), (180, 109508), (210, 93864), (240, 82131), (252, 78220), (280, 70398), (315, 62576), (336, 58665), (360, 54754), (420, 46932), (504, 39110), (560, 35199), (630, 31288), (720, 27377), (840, 23466), (1008, 19555), (1260, 15644), (1680, 11733), (2520, 7822), (3911, 5040)]