28475655

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{239}}^1$

素因数の和:320

約数の個数: 48

約数和(自身を含む): 50595840

約数和(自身を除く): 22120185

約数列:

[1, 3, 5, 13, 15, 39, 47, 65, 141, 169, 195, 235, 239, 507, 611, 705, 717, 845, 1195, 1833, 2535, 3055, 3107, 3585, 7943, 9165, 9321, 11233, 15535, 23829, 33699, 39715, 40391, 46605, 56165, 119145, 121173, 146029, 168495, 201955, 438087, 605865, 730145, 1898377, 2190435, 5695131, 9491885, 28475655]

約数ペア:

[(1, 28475655), (3, 9491885), (5, 5695131), (13, 2190435), (15, 1898377), (39, 730145), (47, 605865), (65, 438087), (141, 201955), (169, 168495), (195, 146029), (235, 121173), (239, 119145), (507, 56165), (611, 46605), (705, 40391), (717, 39715), (845, 33699), (1195, 23829), (1833, 15535), (2535, 11233), (3055, 9321), (3107, 9165), (3585, 7943)]