21807660

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{379}}^1$

素因数の和:535

約数の個数: 96

約数和(自身を含む): 70479360

約数和(自身を除く): 48671700

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 137, 140, 210, 274, 379, 411, 420, 548, 685, 758, 822, 959, 1137, 1370, 1516, 1644, 1895, 1918, 2055, 2274, 2653, 2740, 2877, 3790, 3836, 4110, 4548, 4795, 5306, 5685, 5754, 7580, 7959, 8220, 9590, 10612, 11370, 11508, 13265, 14385, 15918, 19180, 22740, 26530, 28770, 31836, 39795, 51923, 53060, 57540, 79590, 103846, 155769, 159180, 207692, 259615, 311538, 363461, 519230, 623076, 726922, 778845, 1038460, 1090383, 1453844, 1557690, 1817305, 2180766, 3115380, 3634610, 4361532, 5451915, 7269220, 10903830, 21807660]

約数ペア:

[(1, 21807660), (2, 10903830), (3, 7269220), (4, 5451915), (5, 4361532), (6, 3634610), (7, 3115380), (10, 2180766), (12, 1817305), (14, 1557690), (15, 1453844), (20, 1090383), (21, 1038460), (28, 778845), (30, 726922), (35, 623076), (42, 519230), (60, 363461), (70, 311538), (84, 259615), (105, 207692), (137, 159180), (140, 155769), (210, 103846), (274, 79590), (379, 57540), (411, 53060), (420, 51923), (548, 39795), (685, 31836), (758, 28770), (822, 26530), (959, 22740), (1137, 19180), (1370, 15918), (1516, 14385), (1644, 13265), (1895, 11508), (1918, 11370), (2055, 10612), (2274, 9590), (2653, 8220), (2740, 7959), (2877, 7580), (3790, 5754), (3836, 5685), (4110, 5306), (4548, 4795)]