28347760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{227}}^1$

素因数の和:470

約数の個数: 80

約数和(自身を含む): 75995136

約数和(自身を除く): 47647376

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 223, 227, 280, 446, 454, 560, 892, 908, 1115, 1135, 1561, 1589, 1784, 1816, 2230, 2270, 3122, 3178, 3568, 3632, 4460, 4540, 6244, 6356, 7805, 7945, 8920, 9080, 12488, 12712, 15610, 15890, 17840, 18160, 24976, 25424, 31220, 31780, 50621, 62440, 63560, 101242, 124880, 127120, 202484, 253105, 354347, 404968, 506210, 708694, 809936, 1012420, 1417388, 1771735, 2024840, 2834776, 3543470, 4049680, 5669552, 7086940, 14173880, 28347760]

約数ペア:

[(1, 28347760), (2, 14173880), (4, 7086940), (5, 5669552), (7, 4049680), (8, 3543470), (10, 2834776), (14, 2024840), (16, 1771735), (20, 1417388), (28, 1012420), (35, 809936), (40, 708694), (56, 506210), (70, 404968), (80, 354347), (112, 253105), (140, 202484), (223, 127120), (227, 124880), (280, 101242), (446, 63560), (454, 62440), (560, 50621), (892, 31780), (908, 31220), (1115, 25424), (1135, 24976), (1561, 18160), (1589, 17840), (1784, 15890), (1816, 15610), (2230, 12712), (2270, 12488), (3122, 9080), (3178, 8920), (3568, 7945), (3632, 7805), (4460, 6356), (4540, 6244)]