28366720

素因数分解:

$2^7\times 5^1\times {\mathrm{127}}^1\times {\mathrm{349}}^1$

素因数の和:495

約数の個数: 64

約数和(自身を含む): 68544000

約数和(自身を除く): 40177280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 128, 160, 254, 320, 349, 508, 635, 640, 698, 1016, 1270, 1396, 1745, 2032, 2540, 2792, 3490, 4064, 5080, 5584, 6980, 8128, 10160, 11168, 13960, 16256, 20320, 22336, 27920, 40640, 44323, 44672, 55840, 81280, 88646, 111680, 177292, 221615, 223360, 354584, 443230, 709168, 886460, 1418336, 1772920, 2836672, 3545840, 5673344, 7091680, 14183360, 28366720]

約数ペア:

[(1, 28366720), (2, 14183360), (4, 7091680), (5, 5673344), (8, 3545840), (10, 2836672), (16, 1772920), (20, 1418336), (32, 886460), (40, 709168), (64, 443230), (80, 354584), (127, 223360), (128, 221615), (160, 177292), (254, 111680), (320, 88646), (349, 81280), (508, 55840), (635, 44672), (640, 44323), (698, 40640), (1016, 27920), (1270, 22336), (1396, 20320), (1745, 16256), (2032, 13960), (2540, 11168), (2792, 10160), (3490, 8128), (4064, 6980), (5080, 5584)]