28021280

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{197}}^1$

素因数の和:346

約数の個数: 96

約数和(自身を含む): 76640256

約数和(自身を除く): 48618976

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 127, 140, 160, 197, 224, 254, 280, 394, 508, 560, 635, 788, 889, 985, 1016, 1120, 1270, 1379, 1576, 1778, 1970, 2032, 2540, 2758, 3152, 3556, 3940, 4064, 4445, 5080, 5516, 6304, 6895, 7112, 7880, 8890, 10160, 11032, 13790, 14224, 15760, 17780, 20320, 22064, 25019, 27580, 28448, 31520, 35560, 44128, 50038, 55160, 71120, 100076, 110320, 125095, 142240, 175133, 200152, 220640, 250190, 350266, 400304, 500380, 700532, 800608, 875665, 1000760, 1401064, 1751330, 2001520, 2802128, 3502660, 4003040, 5604256, 7005320, 14010640, 28021280]

約数ペア:

[(1, 28021280), (2, 14010640), (4, 7005320), (5, 5604256), (7, 4003040), (8, 3502660), (10, 2802128), (14, 2001520), (16, 1751330), (20, 1401064), (28, 1000760), (32, 875665), (35, 800608), (40, 700532), (56, 500380), (70, 400304), (80, 350266), (112, 250190), (127, 220640), (140, 200152), (160, 175133), (197, 142240), (224, 125095), (254, 110320), (280, 100076), (394, 71120), (508, 55160), (560, 50038), (635, 44128), (788, 35560), (889, 31520), (985, 28448), (1016, 27580), (1120, 25019), (1270, 22064), (1379, 20320), (1576, 17780), (1778, 15760), (1970, 14224), (2032, 13790), (2540, 11032), (2758, 10160), (3152, 8890), (3556, 7880), (3940, 7112), (4064, 6895), (4445, 6304), (5080, 5516)]