20197747120

素因数分解:

$2^4\times 5^1\times {\mathrm{211}}^1\times {\mathrm{937}}^1\times {\mathrm{1277}}^1$

素因数の和:2438

約数の個数: 80

約数和(自身を含む): 47269662048

約数和(自身を除く): 27071914928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 211, 422, 844, 937, 1055, 1277, 1688, 1874, 2110, 2554, 3376, 3748, 4220, 4685, 5108, 6385, 7496, 8440, 9370, 10216, 12770, 14992, 16880, 18740, 20432, 25540, 37480, 51080, 74960, 102160, 197707, 269447, 395414, 538894, 790828, 988535, 1077788, 1196549, 1347235, 1581656, 1977070, 2155576, 2393098, 2694470, 3163312, 3954140, 4311152, 4786196, 5388940, 5982745, 7908280, 9572392, 10777880, 11965490, 15816560, 19144784, 21555760, 23930980, 47861960, 95723920, 252471839, 504943678, 1009887356, 1262359195, 2019774712, 2524718390, 4039549424, 5049436780, 10098873560, 20197747120]

約数ペア:

[(1, 20197747120), (2, 10098873560), (4, 5049436780), (5, 4039549424), (8, 2524718390), (10, 2019774712), (16, 1262359195), (20, 1009887356), (40, 504943678), (80, 252471839), (211, 95723920), (422, 47861960), (844, 23930980), (937, 21555760), (1055, 19144784), (1277, 15816560), (1688, 11965490), (1874, 10777880), (2110, 9572392), (2554, 7908280), (3376, 5982745), (3748, 5388940), (4220, 4786196), (4685, 4311152), (5108, 3954140), (6385, 3163312), (7496, 2694470), (8440, 2393098), (9370, 2155576), (10216, 1977070), (12770, 1581656), (14992, 1347235), (16880, 1196549), (18740, 1077788), (20432, 988535), (25540, 790828), (37480, 538894), (51080, 395414), (74960, 269447), (102160, 197707)]