21736455

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:200

約数の個数: 64

約数和(自身を含む): 40642560

約数和(自身を除く): 18906105

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 65, 79, 83, 85, 195, 221, 237, 249, 255, 395, 415, 663, 1027, 1079, 1105, 1185, 1245, 1343, 1411, 3081, 3237, 3315, 4029, 4233, 5135, 5395, 6557, 6715, 7055, 15405, 16185, 17459, 18343, 19671, 20145, 21165, 32785, 52377, 55029, 85241, 87295, 91715, 98355, 111469, 255723, 261885, 275145, 334407, 426205, 557345, 1278615, 1449097, 1672035, 4347291, 7245485, 21736455]

約数ペア:

[(1, 21736455), (3, 7245485), (5, 4347291), (13, 1672035), (15, 1449097), (17, 1278615), (39, 557345), (51, 426205), (65, 334407), (79, 275145), (83, 261885), (85, 255723), (195, 111469), (221, 98355), (237, 91715), (249, 87295), (255, 85241), (395, 55029), (415, 52377), (663, 32785), (1027, 21165), (1079, 20145), (1105, 19671), (1185, 18343), (1245, 17459), (1343, 16185), (1411, 15405), (3081, 7055), (3237, 6715), (3315, 6557), (4029, 5395), (4233, 5135)]