1280487368

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{195913}}^1$

素因数の和:195981

約数の個数: 32

約数和(自身を含む): 2586064800

約数和(自身を除く): 1305577432

約数列:

[1, 2, 4, 8, 19, 38, 43, 76, 86, 152, 172, 344, 817, 1634, 3268, 6536, 195913, 391826, 783652, 1567304, 3722347, 7444694, 8424259, 14889388, 16848518, 29778776, 33697036, 67394072, 160060921, 320121842, 640243684, 1280487368]

約数ペア:

[(1, 1280487368), (2, 640243684), (4, 320121842), (8, 160060921), (19, 67394072), (38, 33697036), (43, 29778776), (76, 16848518), (86, 14889388), (152, 8424259), (172, 7444694), (344, 3722347), (817, 1567304), (1634, 783652), (3268, 391826), (6536, 195913)]