21236940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{929}}^1$

素因数の和:1071

約数の個数: 72

約数和(自身を含む): 64995840

約数和(自身を除く): 43758900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 127, 180, 254, 381, 508, 635, 762, 929, 1143, 1270, 1524, 1858, 1905, 2286, 2540, 2787, 3716, 3810, 4572, 4645, 5574, 5715, 7620, 8361, 9290, 11148, 11430, 13935, 16722, 18580, 22860, 27870, 33444, 41805, 55740, 83610, 117983, 167220, 235966, 353949, 471932, 589915, 707898, 1061847, 1179830, 1415796, 1769745, 2123694, 2359660, 3539490, 4247388, 5309235, 7078980, 10618470, 21236940]

約数ペア:

[(1, 21236940), (2, 10618470), (3, 7078980), (4, 5309235), (5, 4247388), (6, 3539490), (9, 2359660), (10, 2123694), (12, 1769745), (15, 1415796), (18, 1179830), (20, 1061847), (30, 707898), (36, 589915), (45, 471932), (60, 353949), (90, 235966), (127, 167220), (180, 117983), (254, 83610), (381, 55740), (508, 41805), (635, 33444), (762, 27870), (929, 22860), (1143, 18580), (1270, 16722), (1524, 13935), (1858, 11430), (1905, 11148), (2286, 9290), (2540, 8361), (2787, 7620), (3716, 5715), (3810, 5574), (4572, 4645)]