21572733

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4159}}^1$

素因数の和:4201

約数の個数: 32

約数和(自身を含む): 37273600

約数和(自身を除く): 15700867

約数列:

[1, 3, 7, 13, 19, 21, 39, 57, 91, 133, 247, 273, 399, 741, 1729, 4159, 5187, 12477, 29113, 54067, 79021, 87339, 162201, 237063, 378469, 553147, 1027273, 1135407, 1659441, 3081819, 7190911, 21572733]

約数ペア:

[(1, 21572733), (3, 7190911), (7, 3081819), (13, 1659441), (19, 1135407), (21, 1027273), (39, 553147), (57, 378469), (91, 237063), (133, 162201), (247, 87339), (273, 79021), (399, 54067), (741, 29113), (1729, 12477), (4159, 5187)]