20797700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1$

素因数の和:142

約数の個数: 144

約数和(自身を含む): 58579584

約数和(自身を除く): 37781884

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 25, 28, 35, 37, 44, 50, 55, 70, 73, 74, 77, 100, 110, 140, 146, 148, 154, 175, 185, 220, 259, 275, 292, 308, 350, 365, 370, 385, 407, 511, 518, 550, 700, 730, 740, 770, 803, 814, 925, 1022, 1036, 1100, 1295, 1460, 1540, 1606, 1628, 1825, 1850, 1925, 2035, 2044, 2555, 2590, 2701, 2849, 3212, 3650, 3700, 3850, 4015, 4070, 5110, 5180, 5402, 5621, 5698, 6475, 7300, 7700, 8030, 8140, 10175, 10220, 10804, 11242, 11396, 12775, 12950, 13505, 14245, 16060, 18907, 20075, 20350, 22484, 25550, 25900, 27010, 28105, 28490, 29711, 37814, 40150, 40700, 51100, 54020, 56210, 56980, 59422, 67525, 71225, 75628, 80300, 94535, 112420, 118844, 135050, 140525, 142450, 148555, 189070, 207977, 270100, 281050, 284900, 297110, 378140, 415954, 472675, 562100, 594220, 742775, 831908, 945350, 1039885, 1485550, 1890700, 2079770, 2971100, 4159540, 5199425, 10398850, 20797700]

約数ペア:

[(1, 20797700), (2, 10398850), (4, 5199425), (5, 4159540), (7, 2971100), (10, 2079770), (11, 1890700), (14, 1485550), (20, 1039885), (22, 945350), (25, 831908), (28, 742775), (35, 594220), (37, 562100), (44, 472675), (50, 415954), (55, 378140), (70, 297110), (73, 284900), (74, 281050), (77, 270100), (100, 207977), (110, 189070), (140, 148555), (146, 142450), (148, 140525), (154, 135050), (175, 118844), (185, 112420), (220, 94535), (259, 80300), (275, 75628), (292, 71225), (308, 67525), (350, 59422), (365, 56980), (370, 56210), (385, 54020), (407, 51100), (511, 40700), (518, 40150), (550, 37814), (700, 29711), (730, 28490), (740, 28105), (770, 27010), (803, 25900), (814, 25550), (925, 22484), (1022, 20350), (1036, 20075), (1100, 18907), (1295, 16060), (1460, 14245), (1540, 13505), (1606, 12950), (1628, 12775), (1825, 11396), (1850, 11242), (1925, 10804), (2035, 10220), (2044, 10175), (2555, 8140), (2590, 8030), (2701, 7700), (2849, 7300), (3212, 6475), (3650, 5698), (3700, 5621), (3850, 5402), (4015, 5180), (4070, 5110)]