281725444

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{991}}^1$

素因数の和:1097

約数の個数: 96

約数和(自身を含む): 671956992

約数和(自身を除く): 390231548

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 71, 77, 91, 142, 143, 154, 182, 284, 286, 308, 364, 497, 572, 781, 923, 991, 994, 1001, 1562, 1846, 1982, 1988, 2002, 3124, 3692, 3964, 4004, 5467, 6461, 6937, 10153, 10901, 10934, 12883, 12922, 13874, 20306, 21802, 21868, 25766, 25844, 27748, 40612, 43604, 51532, 70361, 71071, 76307, 90181, 140722, 141713, 142142, 152614, 180362, 281444, 283426, 284284, 305228, 360724, 492527, 566852, 773971, 914693, 985054, 991991, 1547942, 1829386, 1970108, 1983982, 3095884, 3658772, 3967964, 5417797, 6402851, 10061623, 10835594, 12805702, 20123246, 21671188, 25611404, 40246492, 70431361, 140862722, 281725444]

約数ペア:

[(1, 281725444), (2, 140862722), (4, 70431361), (7, 40246492), (11, 25611404), (13, 21671188), (14, 20123246), (22, 12805702), (26, 10835594), (28, 10061623), (44, 6402851), (52, 5417797), (71, 3967964), (77, 3658772), (91, 3095884), (142, 1983982), (143, 1970108), (154, 1829386), (182, 1547942), (284, 991991), (286, 985054), (308, 914693), (364, 773971), (497, 566852), (572, 492527), (781, 360724), (923, 305228), (991, 284284), (994, 283426), (1001, 281444), (1562, 180362), (1846, 152614), (1982, 142142), (1988, 141713), (2002, 140722), (3124, 90181), (3692, 76307), (3964, 71071), (4004, 70361), (5467, 51532), (6461, 43604), (6937, 40612), (10153, 27748), (10901, 25844), (10934, 25766), (12883, 21868), (12922, 21802), (13874, 20306)]