261312639

素因数分解:

$3^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{191}}^1\times {\mathrm{227}}^1$

素因数の和:476

約数の個数: 48

約数和(自身を含む): 419198976

約数和(自身を除く): 157886337

約数列:

[1, 3, 7, 21, 41, 49, 123, 147, 191, 227, 287, 573, 681, 861, 1337, 1589, 2009, 4011, 4767, 6027, 7831, 9307, 9359, 11123, 23493, 27921, 28077, 33369, 43357, 54817, 65149, 130071, 164451, 195447, 303499, 383719, 456043, 910497, 1151157, 1368129, 1777637, 2124493, 5332911, 6373479, 12443459, 37330377, 87104213, 261312639]

約数ペア:

[(1, 261312639), (3, 87104213), (7, 37330377), (21, 12443459), (41, 6373479), (49, 5332911), (123, 2124493), (147, 1777637), (191, 1368129), (227, 1151157), (287, 910497), (573, 456043), (681, 383719), (861, 303499), (1337, 195447), (1589, 164451), (2009, 130071), (4011, 65149), (4767, 54817), (6027, 43357), (7831, 33369), (9307, 28077), (9359, 27921), (11123, 23493)]