816505900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{191}}^1\times {\mathrm{197}}^1$

素因数の和:440

約数の個数: 144

約数和(自身を含む): 2111864832

約数和(自身を除く): 1295358932

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 31, 35, 50, 62, 70, 100, 124, 140, 155, 175, 191, 197, 217, 310, 350, 382, 394, 434, 620, 700, 764, 775, 788, 868, 955, 985, 1085, 1337, 1379, 1550, 1910, 1970, 2170, 2674, 2758, 3100, 3820, 3940, 4340, 4775, 4925, 5348, 5425, 5516, 5921, 6107, 6685, 6895, 9550, 9850, 10850, 11842, 12214, 13370, 13790, 19100, 19700, 21700, 23684, 24428, 26740, 27580, 29605, 30535, 33425, 34475, 37627, 41447, 42749, 59210, 61070, 66850, 68950, 75254, 82894, 85498, 118420, 122140, 133700, 137900, 148025, 150508, 152675, 165788, 170996, 188135, 207235, 213745, 263389, 296050, 305350, 376270, 414470, 427490, 526778, 592100, 610700, 752540, 828940, 854980, 940675, 1036175, 1053556, 1068725, 1166437, 1316945, 1881350, 2072350, 2137450, 2332874, 2633890, 3762700, 4144700, 4274900, 4665748, 5267780, 5832185, 6584725, 8165059, 11664370, 13169450, 16330118, 23328740, 26338900, 29160925, 32660236, 40825295, 58321850, 81650590, 116643700, 163301180, 204126475, 408252950, 816505900]

約数ペア:

[(1, 816505900), (2, 408252950), (4, 204126475), (5, 163301180), (7, 116643700), (10, 81650590), (14, 58321850), (20, 40825295), (25, 32660236), (28, 29160925), (31, 26338900), (35, 23328740), (50, 16330118), (62, 13169450), (70, 11664370), (100, 8165059), (124, 6584725), (140, 5832185), (155, 5267780), (175, 4665748), (191, 4274900), (197, 4144700), (217, 3762700), (310, 2633890), (350, 2332874), (382, 2137450), (394, 2072350), (434, 1881350), (620, 1316945), (700, 1166437), (764, 1068725), (775, 1053556), (788, 1036175), (868, 940675), (955, 854980), (985, 828940), (1085, 752540), (1337, 610700), (1379, 592100), (1550, 526778), (1910, 427490), (1970, 414470), (2170, 376270), (2674, 305350), (2758, 296050), (3100, 263389), (3820, 213745), (3940, 207235), (4340, 188135), (4775, 170996), (4925, 165788), (5348, 152675), (5425, 150508), (5516, 148025), (5921, 137900), (6107, 133700), (6685, 122140), (6895, 118420), (9550, 85498), (9850, 82894), (10850, 75254), (11842, 68950), (12214, 66850), (13370, 61070), (13790, 59210), (19100, 42749), (19700, 41447), (21700, 37627), (23684, 34475), (24428, 33425), (26740, 30535), (27580, 29605)]