20941788

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{61}}^2\times {\mathrm{67}}^1$

素因数の和:203

約数の個数: 72

約数和(自身を含む): 57622656

約数和(自身を除く): 36680868

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 61, 67, 84, 122, 134, 183, 201, 244, 268, 366, 402, 427, 469, 732, 804, 854, 938, 1281, 1407, 1708, 1876, 2562, 2814, 3721, 4087, 5124, 5628, 7442, 8174, 11163, 12261, 14884, 16348, 22326, 24522, 26047, 28609, 44652, 49044, 52094, 57218, 78141, 85827, 104188, 114436, 156282, 171654, 249307, 312564, 343308, 498614, 747921, 997228, 1495842, 1745149, 2991684, 3490298, 5235447, 6980596, 10470894, 20941788]

約数ペア:

[(1, 20941788), (2, 10470894), (3, 6980596), (4, 5235447), (6, 3490298), (7, 2991684), (12, 1745149), (14, 1495842), (21, 997228), (28, 747921), (42, 498614), (61, 343308), (67, 312564), (84, 249307), (122, 171654), (134, 156282), (183, 114436), (201, 104188), (244, 85827), (268, 78141), (366, 57218), (402, 52094), (427, 49044), (469, 44652), (732, 28609), (804, 26047), (854, 24522), (938, 22326), (1281, 16348), (1407, 14884), (1708, 12261), (1876, 11163), (2562, 8174), (2814, 7442), (3721, 5628), (4087, 5124)]