21355278

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{3823}}^1$

素因数の和:3861

約数の個数: 48

約数和(自身を含む): 52312320

約数和(自身を除く): 30957042

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 49, 57, 98, 114, 133, 147, 266, 294, 399, 798, 931, 1862, 2793, 3823, 5586, 7646, 11469, 22938, 26761, 53522, 72637, 80283, 145274, 160566, 187327, 217911, 374654, 435822, 508459, 561981, 1016918, 1123962, 1525377, 3050754, 3559213, 7118426, 10677639, 21355278]

約数ペア:

[(1, 21355278), (2, 10677639), (3, 7118426), (6, 3559213), (7, 3050754), (14, 1525377), (19, 1123962), (21, 1016918), (38, 561981), (42, 508459), (49, 435822), (57, 374654), (98, 217911), (114, 187327), (133, 160566), (147, 145274), (266, 80283), (294, 72637), (399, 53522), (798, 26761), (931, 22938), (1862, 11469), (2793, 7646), (3823, 5586)]