21129525

素因数分解:

$3^3\times 5^2\times {\mathrm{23}}^1\times {\mathrm{1361}}^1$

素因数の和:1403

約数の個数: 48

約数和(自身を含む): 40533120

約数和(自身を除く): 19403595

約数列:

[1, 3, 5, 9, 15, 23, 25, 27, 45, 69, 75, 115, 135, 207, 225, 345, 575, 621, 675, 1035, 1361, 1725, 3105, 4083, 5175, 6805, 12249, 15525, 20415, 31303, 34025, 36747, 61245, 93909, 102075, 156515, 183735, 281727, 306225, 469545, 782575, 845181, 918675, 1408635, 2347725, 4225905, 7043175, 21129525]

約数ペア:

[(1, 21129525), (3, 7043175), (5, 4225905), (9, 2347725), (15, 1408635), (23, 918675), (25, 845181), (27, 782575), (45, 469545), (69, 306225), (75, 281727), (115, 183735), (135, 156515), (207, 102075), (225, 93909), (345, 61245), (575, 36747), (621, 34025), (675, 31303), (1035, 20415), (1361, 15525), (1725, 12249), (3105, 6805), (4083, 5175)]