28146885

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1$

素因数の和:218

約数の個数: 64

約数和(自身を含む): 52254720

約数和(自身を除く): 24107835

約数列:

[1, 3, 5, 13, 15, 19, 39, 57, 65, 71, 95, 107, 195, 213, 247, 285, 321, 355, 535, 741, 923, 1065, 1235, 1349, 1391, 1605, 2033, 2769, 3705, 4047, 4173, 4615, 6099, 6745, 6955, 7597, 10165, 13845, 17537, 20235, 20865, 22791, 26429, 30495, 37985, 52611, 79287, 87685, 98761, 113955, 132145, 144343, 263055, 296283, 396435, 433029, 493805, 721715, 1481415, 1876459, 2165145, 5629377, 9382295, 28146885]

約数ペア:

[(1, 28146885), (3, 9382295), (5, 5629377), (13, 2165145), (15, 1876459), (19, 1481415), (39, 721715), (57, 493805), (65, 433029), (71, 396435), (95, 296283), (107, 263055), (195, 144343), (213, 132145), (247, 113955), (285, 98761), (321, 87685), (355, 79287), (535, 52611), (741, 37985), (923, 30495), (1065, 26429), (1235, 22791), (1349, 20865), (1391, 20235), (1605, 17537), (2033, 13845), (2769, 10165), (3705, 7597), (4047, 6955), (4173, 6745), (4615, 6099)]