2009721860

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{251}}^1\times {\mathrm{6563}}^1$

素因数の和:6884

約数の個数: 48

約数和(自身を含む): 4307349312

約数和(自身を除く): 2297627452

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 251, 305, 502, 610, 1004, 1220, 1255, 2510, 5020, 6563, 13126, 15311, 26252, 30622, 32815, 61244, 65630, 76555, 131260, 153110, 306220, 400343, 800686, 1601372, 1647313, 2001715, 3294626, 4003430, 6589252, 8006860, 8236565, 16473130, 32946260, 100486093, 200972186, 401944372, 502430465, 1004860930, 2009721860]

約数ペア:

[(1, 2009721860), (2, 1004860930), (4, 502430465), (5, 401944372), (10, 200972186), (20, 100486093), (61, 32946260), (122, 16473130), (244, 8236565), (251, 8006860), (305, 6589252), (502, 4003430), (610, 3294626), (1004, 2001715), (1220, 1647313), (1255, 1601372), (2510, 800686), (5020, 400343), (6563, 306220), (13126, 153110), (15311, 131260), (26252, 76555), (30622, 65630), (32815, 61244)]