21156828

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{3271}}^1$

素因数の和:3303

約数の個数: 72

約数和(自身を含む): 62665344

約数和(自身を除く): 41508516

約数列:

[1, 2, 3, 4, 6, 7, 11, 12, 14, 21, 22, 28, 33, 42, 44, 49, 66, 77, 84, 98, 132, 147, 154, 196, 231, 294, 308, 462, 539, 588, 924, 1078, 1617, 2156, 3234, 3271, 6468, 6542, 9813, 13084, 19626, 22897, 35981, 39252, 45794, 68691, 71962, 91588, 107943, 137382, 143924, 160279, 215886, 251867, 274764, 320558, 431772, 480837, 503734, 641116, 755601, 961674, 1007468, 1511202, 1763069, 1923348, 3022404, 3526138, 5289207, 7052276, 10578414, 21156828]

約数ペア:

[(1, 21156828), (2, 10578414), (3, 7052276), (4, 5289207), (6, 3526138), (7, 3022404), (11, 1923348), (12, 1763069), (14, 1511202), (21, 1007468), (22, 961674), (28, 755601), (33, 641116), (42, 503734), (44, 480837), (49, 431772), (66, 320558), (77, 274764), (84, 251867), (98, 215886), (132, 160279), (147, 143924), (154, 137382), (196, 107943), (231, 91588), (294, 71962), (308, 68691), (462, 45794), (539, 39252), (588, 35981), (924, 22897), (1078, 19626), (1617, 13084), (2156, 9813), (3234, 6542), (3271, 6468)]