21061744

素因数分解:

$2^4\times {\mathrm{11}}^3\times {\mathrm{23}}^1\times {\mathrm{43}}^1$

素因数の和:107

約数の個数: 80

約数和(自身を含む): 47925504

約数和(自身を除く): 26863760

約数列:

[1, 2, 4, 8, 11, 16, 22, 23, 43, 44, 46, 86, 88, 92, 121, 172, 176, 184, 242, 253, 344, 368, 473, 484, 506, 688, 946, 968, 989, 1012, 1331, 1892, 1936, 1978, 2024, 2662, 2783, 3784, 3956, 4048, 5203, 5324, 5566, 7568, 7912, 10406, 10648, 10879, 11132, 15824, 20812, 21296, 21758, 22264, 30613, 41624, 43516, 44528, 57233, 61226, 83248, 87032, 114466, 119669, 122452, 174064, 228932, 239338, 244904, 457864, 478676, 489808, 915728, 957352, 1316359, 1914704, 2632718, 5265436, 10530872, 21061744]

約数ペア:

[(1, 21061744), (2, 10530872), (4, 5265436), (8, 2632718), (11, 1914704), (16, 1316359), (22, 957352), (23, 915728), (43, 489808), (44, 478676), (46, 457864), (86, 244904), (88, 239338), (92, 228932), (121, 174064), (172, 122452), (176, 119669), (184, 114466), (242, 87032), (253, 83248), (344, 61226), (368, 57233), (473, 44528), (484, 43516), (506, 41624), (688, 30613), (946, 22264), (968, 21758), (989, 21296), (1012, 20812), (1331, 15824), (1892, 11132), (1936, 10879), (1978, 10648), (2024, 10406), (2662, 7912), (2783, 7568), (3784, 5566), (3956, 5324), (4048, 5203)]