21293856

素因数分解:

$2^5\times 3^2\times {\mathrm{107}}^1\times {\mathrm{691}}^1$

素因数の和:814

約数の個数: 72

約数和(自身を含む): 61208784

約数和(自身を除く): 39914928

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 107, 144, 214, 288, 321, 428, 642, 691, 856, 963, 1284, 1382, 1712, 1926, 2073, 2568, 2764, 3424, 3852, 4146, 5136, 5528, 6219, 7704, 8292, 10272, 11056, 12438, 15408, 16584, 22112, 24876, 30816, 33168, 49752, 66336, 73937, 99504, 147874, 199008, 221811, 295748, 443622, 591496, 665433, 887244, 1182992, 1330866, 1774488, 2365984, 2661732, 3548976, 5323464, 7097952, 10646928, 21293856]

約数ペア:

[(1, 21293856), (2, 10646928), (3, 7097952), (4, 5323464), (6, 3548976), (8, 2661732), (9, 2365984), (12, 1774488), (16, 1330866), (18, 1182992), (24, 887244), (32, 665433), (36, 591496), (48, 443622), (72, 295748), (96, 221811), (107, 199008), (144, 147874), (214, 99504), (288, 73937), (321, 66336), (428, 49752), (642, 33168), (691, 30816), (856, 24876), (963, 22112), (1284, 16584), (1382, 15408), (1712, 12438), (1926, 11056), (2073, 10272), (2568, 8292), (2764, 7704), (3424, 6219), (3852, 5528), (4146, 5136)]