20545707

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{233}}^1$

素因数の和:292

約数の個数: 64

約数和(自身を含む): 37739520

約数和(自身を除く): 17193813

約数列:

[1, 3, 7, 13, 17, 19, 21, 39, 51, 57, 91, 119, 133, 221, 233, 247, 273, 323, 357, 399, 663, 699, 741, 969, 1547, 1631, 1729, 2261, 3029, 3961, 4199, 4427, 4641, 4893, 5187, 6783, 9087, 11883, 12597, 13281, 21203, 27727, 29393, 30989, 51493, 57551, 63609, 75259, 83181, 88179, 92967, 154479, 172653, 225777, 360451, 402857, 526813, 978367, 1081353, 1208571, 1580439, 2935101, 6848569, 20545707]

約数ペア:

[(1, 20545707), (3, 6848569), (7, 2935101), (13, 1580439), (17, 1208571), (19, 1081353), (21, 978367), (39, 526813), (51, 402857), (57, 360451), (91, 225777), (119, 172653), (133, 154479), (221, 92967), (233, 88179), (247, 83181), (273, 75259), (323, 63609), (357, 57551), (399, 51493), (663, 30989), (699, 29393), (741, 27727), (969, 21203), (1547, 13281), (1631, 12597), (1729, 11883), (2261, 9087), (3029, 6783), (3961, 5187), (4199, 4893), (4427, 4641)]