213734521

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1$

素因数の和:155

約数の個数: 72

約数和(自身を含む): 305665920

約数和(自身を除く): 91931399

約数列:

[1, 7, 11, 13, 47, 49, 59, 77, 91, 121, 143, 329, 413, 517, 539, 611, 637, 649, 767, 847, 1001, 1573, 2303, 2773, 2891, 3619, 4277, 4543, 5369, 5687, 5929, 6721, 7007, 7139, 8437, 11011, 19411, 25333, 29939, 30503, 31801, 36049, 37583, 39809, 47047, 49973, 59059, 73931, 77077, 92807, 135877, 213521, 252343, 278663, 329329, 335533, 349811, 396539, 413413, 517517, 649649, 1494647, 1766401, 2348731, 2775773, 3622619, 4361929, 4547543, 16441117, 19430411, 30533503, 213734521]

約数ペア:

[(1, 213734521), (7, 30533503), (11, 19430411), (13, 16441117), (47, 4547543), (49, 4361929), (59, 3622619), (77, 2775773), (91, 2348731), (121, 1766401), (143, 1494647), (329, 649649), (413, 517517), (517, 413413), (539, 396539), (611, 349811), (637, 335533), (649, 329329), (767, 278663), (847, 252343), (1001, 213521), (1573, 135877), (2303, 92807), (2773, 77077), (2891, 73931), (3619, 59059), (4277, 49973), (4543, 47047), (5369, 39809), (5687, 37583), (5929, 36049), (6721, 31801), (7007, 30503), (7139, 29939), (8437, 25333), (11011, 19411)]