21398928

素因数分解:

$2^4\times 3^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{197}}^1$

素因数の和:312

約数の個数: 80

約数和(自身を含む): 58139136

約数和(自身を除く): 36740208

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 31, 48, 62, 73, 93, 124, 146, 186, 197, 219, 248, 292, 372, 394, 438, 496, 584, 591, 744, 788, 876, 1168, 1182, 1488, 1576, 1752, 2263, 2364, 3152, 3504, 4526, 4728, 6107, 6789, 9052, 9456, 12214, 13578, 14381, 18104, 18321, 24428, 27156, 28762, 36208, 36642, 43143, 48856, 54312, 57524, 73284, 86286, 97712, 108624, 115048, 146568, 172572, 230096, 293136, 345144, 445811, 690288, 891622, 1337433, 1783244, 2674866, 3566488, 5349732, 7132976, 10699464, 21398928]

約数ペア:

[(1, 21398928), (2, 10699464), (3, 7132976), (4, 5349732), (6, 3566488), (8, 2674866), (12, 1783244), (16, 1337433), (24, 891622), (31, 690288), (48, 445811), (62, 345144), (73, 293136), (93, 230096), (124, 172572), (146, 146568), (186, 115048), (197, 108624), (219, 97712), (248, 86286), (292, 73284), (372, 57524), (394, 54312), (438, 48856), (496, 43143), (584, 36642), (591, 36208), (744, 28762), (788, 27156), (876, 24428), (1168, 18321), (1182, 18104), (1488, 14381), (1576, 13578), (1752, 12214), (2263, 9456), (2364, 9052), (3152, 6789), (3504, 6107), (4526, 4728)]