28352240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{257}}^1$

素因数の和:474

約数の個数: 80

約数和(自身を含む): 76012992

約数和(自身を除く): 47660752

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 197, 257, 280, 394, 514, 560, 788, 985, 1028, 1285, 1379, 1576, 1799, 1970, 2056, 2570, 2758, 3152, 3598, 3940, 4112, 5140, 5516, 6895, 7196, 7880, 8995, 10280, 11032, 13790, 14392, 15760, 17990, 20560, 22064, 27580, 28784, 35980, 50629, 55160, 71960, 101258, 110320, 143920, 202516, 253145, 354403, 405032, 506290, 708806, 810064, 1012580, 1417612, 1772015, 2025160, 2835224, 3544030, 4050320, 5670448, 7088060, 14176120, 28352240]

約数ペア:

[(1, 28352240), (2, 14176120), (4, 7088060), (5, 5670448), (7, 4050320), (8, 3544030), (10, 2835224), (14, 2025160), (16, 1772015), (20, 1417612), (28, 1012580), (35, 810064), (40, 708806), (56, 506290), (70, 405032), (80, 354403), (112, 253145), (140, 202516), (197, 143920), (257, 110320), (280, 101258), (394, 71960), (514, 55160), (560, 50629), (788, 35980), (985, 28784), (1028, 27580), (1285, 22064), (1379, 20560), (1576, 17990), (1799, 15760), (1970, 14392), (2056, 13790), (2570, 11032), (2758, 10280), (3152, 8995), (3598, 7880), (3940, 7196), (4112, 6895), (5140, 5516)]