20007195

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1$

素因数の和:164

約数の個数: 64

約数和(自身を含む): 36771840

約数和(自身を除く): 16764645

約数列:

[1, 3, 5, 13, 15, 37, 39, 47, 59, 65, 111, 141, 177, 185, 195, 235, 295, 481, 555, 611, 705, 767, 885, 1443, 1739, 1833, 2183, 2301, 2405, 2773, 3055, 3835, 5217, 6549, 7215, 8319, 8695, 9165, 10915, 11505, 13865, 22607, 26085, 28379, 32745, 36049, 41595, 67821, 85137, 102601, 108147, 113035, 141895, 180245, 307803, 339105, 425685, 513005, 540735, 1333813, 1539015, 4001439, 6669065, 20007195]

約数ペア:

[(1, 20007195), (3, 6669065), (5, 4001439), (13, 1539015), (15, 1333813), (37, 540735), (39, 513005), (47, 425685), (59, 339105), (65, 307803), (111, 180245), (141, 141895), (177, 113035), (185, 108147), (195, 102601), (235, 85137), (295, 67821), (481, 41595), (555, 36049), (611, 32745), (705, 28379), (767, 26085), (885, 22607), (1443, 13865), (1739, 11505), (1833, 10915), (2183, 9165), (2301, 8695), (2405, 8319), (2773, 7215), (3055, 6549), (3835, 5217)]