21012912

素因数分解:

$2^4\times 3^3\times {\mathrm{127}}^1\times {\mathrm{383}}^1$

素因数の和:527

約数の個数: 80

約数和(自身を含む): 60948480

約数和(自身を除く): 39935568

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 72, 108, 127, 144, 216, 254, 381, 383, 432, 508, 762, 766, 1016, 1143, 1149, 1524, 1532, 2032, 2286, 2298, 3048, 3064, 3429, 3447, 4572, 4596, 6096, 6128, 6858, 6894, 9144, 9192, 10341, 13716, 13788, 18288, 18384, 20682, 27432, 27576, 41364, 48641, 54864, 55152, 82728, 97282, 145923, 165456, 194564, 291846, 389128, 437769, 583692, 778256, 875538, 1167384, 1313307, 1751076, 2334768, 2626614, 3502152, 5253228, 7004304, 10506456, 21012912]

約数ペア:

[(1, 21012912), (2, 10506456), (3, 7004304), (4, 5253228), (6, 3502152), (8, 2626614), (9, 2334768), (12, 1751076), (16, 1313307), (18, 1167384), (24, 875538), (27, 778256), (36, 583692), (48, 437769), (54, 389128), (72, 291846), (108, 194564), (127, 165456), (144, 145923), (216, 97282), (254, 82728), (381, 55152), (383, 54864), (432, 48641), (508, 41364), (762, 27576), (766, 27432), (1016, 20682), (1143, 18384), (1149, 18288), (1524, 13788), (1532, 13716), (2032, 10341), (2286, 9192), (2298, 9144), (3048, 6894), (3064, 6858), (3429, 6128), (3447, 6096), (4572, 4596)]