2009397560

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{460871}}^1$

素因数の和:460991

約数の個数: 32

約数和(自身を含む): 4562632800

約数和(自身を除く): 2553235240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 460871, 921742, 1843484, 2304355, 3686968, 4608710, 9217420, 18434840, 50234939, 100469878, 200939756, 251174695, 401879512, 502349390, 1004698780, 2009397560]

約数ペア:

[(1, 2009397560), (2, 1004698780), (4, 502349390), (5, 401879512), (8, 251174695), (10, 200939756), (20, 100469878), (40, 50234939), (109, 18434840), (218, 9217420), (436, 4608710), (545, 3686968), (872, 2304355), (1090, 1843484), (2180, 921742), (4360, 460871)]