20894566

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{193}}^1$

素因数の和:269

約数の個数: 64

約数和(自身を含む): 42462720

約数和(自身を除く): 21568154

約数列:

[1, 2, 7, 11, 14, 19, 22, 37, 38, 74, 77, 133, 154, 193, 209, 259, 266, 386, 407, 418, 518, 703, 814, 1351, 1406, 1463, 2123, 2702, 2849, 2926, 3667, 4246, 4921, 5698, 7141, 7334, 7733, 9842, 14282, 14861, 15466, 25669, 29722, 40337, 49987, 51338, 54131, 78551, 80674, 99974, 108262, 135679, 157102, 271358, 282359, 549857, 564718, 949753, 1099714, 1492469, 1899506, 2984938, 10447283, 20894566]

約数ペア:

[(1, 20894566), (2, 10447283), (7, 2984938), (11, 1899506), (14, 1492469), (19, 1099714), (22, 949753), (37, 564718), (38, 549857), (74, 282359), (77, 271358), (133, 157102), (154, 135679), (193, 108262), (209, 99974), (259, 80674), (266, 78551), (386, 54131), (407, 51338), (418, 49987), (518, 40337), (703, 29722), (814, 25669), (1351, 15466), (1406, 14861), (1463, 14282), (2123, 9842), (2702, 7733), (2849, 7334), (2926, 7141), (3667, 5698), (4246, 4921)]