21462420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{373}}^1$

素因数の和:529

約数の個数: 96

約数和(自身を含む): 69366528

約数和(自身を除く): 47904108

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 137, 140, 210, 274, 373, 411, 420, 548, 685, 746, 822, 959, 1119, 1370, 1492, 1644, 1865, 1918, 2055, 2238, 2611, 2740, 2877, 3730, 3836, 4110, 4476, 4795, 5222, 5595, 5754, 7460, 7833, 8220, 9590, 10444, 11190, 11508, 13055, 14385, 15666, 19180, 22380, 26110, 28770, 31332, 39165, 51101, 52220, 57540, 78330, 102202, 153303, 156660, 204404, 255505, 306606, 357707, 511010, 613212, 715414, 766515, 1022020, 1073121, 1430828, 1533030, 1788535, 2146242, 3066060, 3577070, 4292484, 5365605, 7154140, 10731210, 21462420]

約数ペア:

[(1, 21462420), (2, 10731210), (3, 7154140), (4, 5365605), (5, 4292484), (6, 3577070), (7, 3066060), (10, 2146242), (12, 1788535), (14, 1533030), (15, 1430828), (20, 1073121), (21, 1022020), (28, 766515), (30, 715414), (35, 613212), (42, 511010), (60, 357707), (70, 306606), (84, 255505), (105, 204404), (137, 156660), (140, 153303), (210, 102202), (274, 78330), (373, 57540), (411, 52220), (420, 51101), (548, 39165), (685, 31332), (746, 28770), (822, 26110), (959, 22380), (1119, 19180), (1370, 15666), (1492, 14385), (1644, 13055), (1865, 11508), (1918, 11190), (2055, 10444), (2238, 9590), (2611, 8220), (2740, 7833), (2877, 7460), (3730, 5754), (3836, 5595), (4110, 5222), (4476, 4795)]